diff --git a/src/geocoders/api.ts b/src/geocoders/api.ts
index 1cdae6c0..c96d2532 100644
--- a/src/geocoders/api.ts
+++ b/src/geocoders/api.ts
@@ -42,3 +42,10 @@ export function geocodingParams(
 ): Record<string, unknown> {
   return L.Util.extend(params, options.geocodingQueryParams);
 }
+
+export function reverseParams(
+  options: GeocoderOptions,
+  params: Record<string, unknown>
+): Record<string, unknown> {
+  return L.Util.extend(params, options.reverseQueryParams);
+}
diff --git a/src/geocoders/arcgis.ts b/src/geocoders/arcgis.ts
index 92f1b29c..8b9fa962 100644
--- a/src/geocoders/arcgis.ts
+++ b/src/geocoders/arcgis.ts
@@ -6,7 +6,8 @@ import {
   GeocodingCallback,
   geocodingParams,
   GeocodingResult,
-  ReverseGeocodingResult
+  ReverseGeocodingResult,
+  reverseParams
 } from './api';
 
 export interface ArcGisOptions extends GeocoderOptions {}
@@ -63,12 +64,11 @@ export class ArcGis implements GeocoderAPI {
     cb: (result: any) => void,
     context?: any
   ): void {
-    const params = {
+    const params = reverseParams(this.options, {
       location: encodeURIComponent(location.lng) + ',' + encodeURIComponent(location.lat),
       distance: 100,
       f: 'json'
-    };
-
+    });
     getJSON(this.options.serviceUrl + '/reverseGeocode', params, data => {
       const result: ReverseGeocodingResult[] = [];
       if (data && !data.error) {
diff --git a/src/geocoders/bing.ts b/src/geocoders/bing.ts
index 923acc2e..7d69e713 100644
--- a/src/geocoders/bing.ts
+++ b/src/geocoders/bing.ts
@@ -5,7 +5,8 @@ import {
   GeocoderOptions,
   GeocodingCallback,
   geocodingParams,
-  GeocodingResult
+  GeocodingResult,
+  reverseParams
 } from './api';
 
 export interface BingOptions extends GeocoderOptions {}
@@ -53,10 +54,12 @@ export class Bing implements GeocoderAPI {
     cb: (result: any) => void,
     context?: any
   ): void {
-    const params = { key: this.options.apiKey };
+    const params = reverseParams(this.options, {
+      key: this.options.apiKey
+    });
     jsonp(
       this.options.serviceUrl + location.lat + ',' + location.lng,
-      L.Util.extend(params, this.options.reverseQueryParams),
+      params,
       data => {
         const results: GeocodingResult[] = [];
         for (let i = data.resourceSets[0].resources.length - 1; i >= 0; i--) {
diff --git a/src/geocoders/google.ts b/src/geocoders/google.ts
index 1078b687..ba39a981 100644
--- a/src/geocoders/google.ts
+++ b/src/geocoders/google.ts
@@ -5,7 +5,8 @@ import {
   GeocoderOptions,
   GeocodingCallback,
   geocodingParams,
-  GeocodingResult
+  GeocodingResult,
+  reverseParams
 } from './api';
 
 export interface GoogleOptions extends GeocoderOptions {}
@@ -53,12 +54,10 @@ export class Google implements GeocoderAPI {
     cb: (result: any) => void,
     context?: any
   ): void {
-    let params = {
+    const params = reverseParams(this.options, {
       key: this.options.apiKey,
       latlng: encodeURIComponent(location.lat) + ',' + encodeURIComponent(location.lng)
-    };
-    params = L.Util.extend(params, this.options.reverseQueryParams);
-
+    });
     getJSON(this.options.serviceUrl, params, data => {
       const results: GeocodingResult[] = [];
       if (data.results && data.results.length) {
diff --git a/src/geocoders/here.ts b/src/geocoders/here.ts
index 578003ae..fdc78f6d 100755
--- a/src/geocoders/here.ts
+++ b/src/geocoders/here.ts
@@ -5,7 +5,8 @@ import {
   GeocoderOptions,
   GeocodingCallback,
   geocodingParams,
-  GeocodingResult
+  GeocodingResult,
+  reverseParams
 } from './api';
 
 export interface HereOptions extends GeocoderOptions {
@@ -48,15 +49,14 @@ export class HERE implements GeocoderAPI {
       ? this.options.reverseGeocodeProxRadius
       : null;
     const proxRadius = _proxRadius ? ',' + encodeURIComponent(_proxRadius) : '';
-    let params = {
+    const params = reverseParams(this.options, {
       prox: encodeURIComponent(location.lat) + ',' + encodeURIComponent(location.lng) + proxRadius,
       mode: 'retrieveAddresses',
       app_id: this.options.app_id,
       app_code: this.options.app_code,
       gen: 9,
       jsonattributes: 1
-    };
-    params = L.Util.extend(params, this.options.reverseQueryParams);
+    });
     this.getJSON(this.options.serviceUrl + 'reversegeocode.json', params, cb, context);
   }
 
diff --git a/src/geocoders/mapbox.ts b/src/geocoders/mapbox.ts
index 18c8030e..978cfc29 100644
--- a/src/geocoders/mapbox.ts
+++ b/src/geocoders/mapbox.ts
@@ -5,7 +5,8 @@ import {
   GeocoderOptions,
   GeocodingCallback,
   geocodingParams,
-  GeocodingResult
+  GeocodingResult,
+  reverseParams
 } from './api';
 
 export interface MapboxOptions extends GeocoderOptions {}
@@ -87,10 +88,9 @@ export class Mapbox implements GeocoderAPI {
     cb: (result: any) => void,
     context?: any
   ): void {
-    const param = L.Util.extend(
-      { access_token: this.options.apiKey },
-      this.options.reverseQueryParams
-    );
+    const param = reverseParams(this.options, {
+      access_token: this.options.apiKey
+    });
     getJSON(
       this.options.serviceUrl +
         encodeURIComponent(location.lng) +
diff --git a/src/geocoders/mapquest.ts b/src/geocoders/mapquest.ts
index 9fc9a674..9e9f5abc 100644
--- a/src/geocoders/mapquest.ts
+++ b/src/geocoders/mapquest.ts
@@ -5,7 +5,8 @@ import {
   GeocoderOptions,
   GeocodingCallback,
   geocodingParams,
-  GeocodingResult
+  GeocodingResult,
+  reverseParams
 } from './api';
 
 export interface MapQuestOptions extends GeocoderOptions {}
@@ -61,13 +62,14 @@ export class MapQuest implements GeocoderAPI {
     cb: (result: any) => void,
     context?: any
   ): void {
+    const params = reverseParams(this.options, {
+      key: this.options.apiKey,
+      location: location.lat + ',' + location.lng,
+      outputFormat: 'json'
+    });
     getJSON(
       this.options.serviceUrl + '/reverse',
-      {
-        key: this.options.apiKey,
-        location: location.lat + ',' + location.lng,
-        outputFormat: 'json'
-      },
+      params,
       L.Util.bind(function(data) {
         const results: GeocodingResult[] = [];
         if (data.results && data.results[0].locations) {
diff --git a/src/geocoders/neutrino.ts b/src/geocoders/neutrino.ts
index eba8b007..7dee4ef7 100644
--- a/src/geocoders/neutrino.ts
+++ b/src/geocoders/neutrino.ts
@@ -5,7 +5,8 @@ import {
   GeocoderOptions,
   GeocodingCallback,
   geocodingParams,
-  GeocodingResult
+  GeocodingResult,
+  reverseParams
 } from './api';
 
 export interface NeutrinoOptions extends GeocoderOptions {
@@ -59,28 +60,25 @@ export class Neutrino implements GeocoderAPI {
     cb: (result: any) => void,
     context?: any
   ): void {
-    getJSON(
-      this.options.serviceUrl + 'geocode-reverse',
-      {
-        apiKey: this.options.apiKey,
-        userId: this.options.userId,
-        latitude: location.lat,
-        longitude: location.lng
-      },
-      data => {
-        const results: GeocodingResult[] = [];
-        if (data.status.status == 200 && data.found) {
-          const center = L.latLng(location.lat, location.lng);
-          const bbox = L.latLngBounds(center, center);
-          results[0] = {
-            name: data.address,
-            bbox: bbox,
-            center: center
-          };
-        }
-        cb.call(context, results);
+    const params = reverseParams(this.options, {
+      apiKey: this.options.apiKey,
+      userId: this.options.userId,
+      latitude: location.lat,
+      longitude: location.lng
+    });
+    getJSON(this.options.serviceUrl + 'geocode-reverse', params, data => {
+      const results: GeocodingResult[] = [];
+      if (data.status.status == 200 && data.found) {
+        const center = L.latLng(location.lat, location.lng);
+        const bbox = L.latLngBounds(center, center);
+        results[0] = {
+          name: data.address,
+          bbox: bbox,
+          center: center
+        };
       }
-    );
+      cb.call(context, results);
+    });
   }
 }
 
diff --git a/src/geocoders/nominatim.ts b/src/geocoders/nominatim.ts
index 6603c70a..51d8d0e3 100644
--- a/src/geocoders/nominatim.ts
+++ b/src/geocoders/nominatim.ts
@@ -6,7 +6,8 @@ import {
   GeocodingCallback,
   geocodingParams,
   GeocodingResult,
-  ReverseGeocodingResult
+  ReverseGeocodingResult,
+  reverseParams
 } from './api';
 
 export interface NominatimResult {
@@ -104,35 +105,29 @@ export class Nominatim implements GeocoderAPI {
   }
 
   reverse(location: L.LatLngLiteral, scale: number, cb: (result: any) => void, context?: any) {
-    getJSON(
-      this.options.serviceUrl + 'reverse',
-      L.Util.extend(
-        {
-          lat: location.lat,
-          lon: location.lng,
-          zoom: Math.round(Math.log(scale / 256) / Math.log(2)),
-          addressdetails: 1,
-          format: 'json'
-        },
-        this.options.reverseQueryParams
-      ),
-      data => {
-        const result: ReverseGeocodingResult[] = [];
-        if (data && data.lat && data.lon) {
-          const center = L.latLng(data.lat, data.lon);
-          const bbox = L.latLngBounds(center, center);
-          result.push({
-            name: data.display_name,
-            html: this.options.htmlTemplate ? this.options.htmlTemplate(data) : undefined,
-            center: center,
-            bbox: bbox,
-            bounds: bbox,
-            properties: data
-          });
-        }
-        cb.call(context, result);
+    const params = reverseParams(this.options, {
+      lat: location.lat,
+      lon: location.lng,
+      zoom: Math.round(Math.log(scale / 256) / Math.log(2)),
+      addressdetails: 1,
+      format: 'json'
+    });
+    getJSON(this.options.serviceUrl + 'reverse', params, data => {
+      const result: ReverseGeocodingResult[] = [];
+      if (data && data.lat && data.lon) {
+        const center = L.latLng(data.lat, data.lon);
+        const bbox = L.latLngBounds(center, center);
+        result.push({
+          name: data.display_name,
+          html: this.options.htmlTemplate ? this.options.htmlTemplate(data) : undefined,
+          center: center,
+          bbox: bbox,
+          bounds: bbox,
+          properties: data
+        });
       }
-    );
+      cb.call(context, result);
+    });
   }
 }
 
diff --git a/src/geocoders/opencage.ts b/src/geocoders/opencage.ts
index 930f8c29..a9224ee4 100644
--- a/src/geocoders/opencage.ts
+++ b/src/geocoders/opencage.ts
@@ -5,7 +5,8 @@ import {
   GeocoderOptions,
   GeocodingCallback,
   geocodingParams,
-  GeocodingResult
+  GeocodingResult,
+  reverseParams
 } from './api';
 
 export interface OpenCageOptions extends GeocoderOptions {}
@@ -60,11 +61,10 @@ export class OpenCage implements GeocoderAPI {
     cb: (result: any) => void,
     context?: any
   ): void {
-    let params = {
+    const params = reverseParams(this.options, {
       key: this.options.apiKey,
       q: [location.lat, location.lng].join(',')
-    };
-    params = L.Util.extend(params, this.options.reverseQueryParams);
+    });
     getJSON(this.options.serviceUrl, params, data => {
       const results: GeocodingResult[] = [];
       if (data.results && data.results.length) {
diff --git a/src/geocoders/pelias.ts b/src/geocoders/pelias.ts
index 597c4b38..3febead2 100644
--- a/src/geocoders/pelias.ts
+++ b/src/geocoders/pelias.ts
@@ -5,7 +5,8 @@ import {
   GeocoderOptions,
   GeocodingCallback,
   geocodingParams,
-  GeocodingResult
+  GeocodingResult,
+  reverseParams
 } from './api';
 
 export interface PeliasOptions extends GeocoderOptions {}
@@ -50,20 +51,14 @@ export class Pelias implements GeocoderAPI {
     cb: (result: any) => void,
     context?: any
   ): void {
-    getJSON(
-      this.options.serviceUrl + '/reverse',
-      L.Util.extend(
-        {
-          api_key: this.options.apiKey,
-          'point.lat': location.lat,
-          'point.lon': location.lng
-        },
-        this.options.reverseQueryParams
-      ),
-      data => {
-        cb.call(context, this._parseResults(data, 'bounds'));
-      }
-    );
+    const params = reverseParams(this.options, {
+      api_key: this.options.apiKey,
+      'point.lat': location.lat,
+      'point.lon': location.lng
+    });
+    getJSON(this.options.serviceUrl + '/reverse', params, data => {
+      cb.call(context, this._parseResults(data, 'bounds'));
+    });
   }
 
   _parseResults(data, bboxname) {
diff --git a/src/geocoders/photon.ts b/src/geocoders/photon.ts
index 889e8980..7734b936 100644
--- a/src/geocoders/photon.ts
+++ b/src/geocoders/photon.ts
@@ -5,7 +5,8 @@ import {
   GeocoderOptions,
   GeocodingCallback,
   geocodingParams,
-  GeocodingResult
+  GeocodingResult,
+  reverseParams
 } from './api';
 
 export interface PhotonOptions extends GeocoderOptions {
@@ -41,14 +42,10 @@ export class Photon implements GeocoderAPI {
   }
 
   reverse(latLng: L.LatLngLiteral, scale: number, cb: (result: any) => void, context?: any): void {
-    const params = L.Util.extend(
-      {
-        lat: latLng.lat,
-        lon: latLng.lng
-      },
-      this.options.reverseQueryParams
-    );
-
+    const params = reverseParams(this.options, {
+      lat: latLng.lat,
+      lon: latLng.lng
+    });
     getJSON(
       this.options.reverseUrl,
       params,
diff --git a/src/geocoders/what3words.ts b/src/geocoders/what3words.ts
index de4ada4d..33cfe328 100644
--- a/src/geocoders/what3words.ts
+++ b/src/geocoders/what3words.ts
@@ -5,7 +5,8 @@ import {
   GeocoderOptions,
   GeocodingCallback,
   geocodingParams,
-  GeocodingResult
+  GeocodingResult,
+  reverseParams
 } from './api';
 
 export interface What3WordsOptions extends GeocoderOptions {}
@@ -56,10 +57,10 @@ export class What3Words implements GeocoderAPI {
   ): void {
     getJSON(
       this.options.serviceUrl + 'reverse',
-      {
+      reverseParams(this.options, {
         key: this.options.apiKey,
         coords: [location.lat, location.lng].join(',')
-      },
+      }),
       data => {
         const results: GeocodingResult[] = [];
         if (data.status.status == 200) {