diff --git a/public/pages/Dashboard/Container/DashboardOverview.tsx b/public/pages/Dashboard/Container/DashboardOverview.tsx
index 66d2da08..13c6d70e 100644
--- a/public/pages/Dashboard/Container/DashboardOverview.tsx
+++ b/public/pages/Dashboard/Container/DashboardOverview.tsx
@@ -207,15 +207,18 @@ export function DashboardOverview(props: OverviewProps) {
   };
 
   const intializeDetectors = async () => {
-    dispatch(
-      getDetectorList(
-        getAllDetectorsQueryParamsWithDataSourceId(
-          MDSOverviewState.selectedDataSourceId
+    // wait until selected data source is ready before doing dispatch calls if mds is enabled
+    if (!dataSourceEnabled || (MDSOverviewState.selectedDataSourceId && MDSOverviewState.selectedDataSourceId !== "")) {
+      dispatch(
+        getDetectorList(
+          getAllDetectorsQueryParamsWithDataSourceId(
+            MDSOverviewState.selectedDataSourceId
+          )
         )
-      )
-    );
-    dispatch(getIndices('', MDSOverviewState.selectedDataSourceId));
-    dispatch(getAliases('', MDSOverviewState.selectedDataSourceId));
+      );
+      dispatch(getIndices('', MDSOverviewState.selectedDataSourceId));
+      dispatch(getAliases('', MDSOverviewState.selectedDataSourceId));
+    }
   };
 
   useEffect(() => {
diff --git a/public/pages/DetectorsList/containers/List/List.tsx b/public/pages/DetectorsList/containers/List/List.tsx
index 2db748bc..09b31ae4 100644
--- a/public/pages/DetectorsList/containers/List/List.tsx
+++ b/public/pages/DetectorsList/containers/List/List.tsx
@@ -330,11 +330,14 @@ export const DetectorList = (props: ListProps) => {
   }, [confirmModalState.isRequestingToClose, isLoading]);
 
   const getUpdatedDetectors = async () => {
-    dispatch(
-      getDetectorList(
-        getAllDetectorsQueryParamsWithDataSourceId(state.selectedDataSourceId)
-      )
-    );
+    // wait until selected data source is ready before doing dispatch calls if mds is enabled
+    if (!dataSourceEnabled || (state.selectedDataSourceId && state.selectedDataSourceId !== "")) {
+      dispatch(
+        getDetectorList(
+          getAllDetectorsQueryParamsWithDataSourceId(state.selectedDataSourceId)
+        )
+      );
+    }
   };
 
   const handlePageChange = (pageNumber: number) => {
diff --git a/public/pages/Overview/containers/AnomalyDetectionOverview.tsx b/public/pages/Overview/containers/AnomalyDetectionOverview.tsx
index 04b7c52c..4a02aa5e 100644
--- a/public/pages/Overview/containers/AnomalyDetectionOverview.tsx
+++ b/public/pages/Overview/containers/AnomalyDetectionOverview.tsx
@@ -155,23 +155,26 @@ export function AnomalyDetectionOverview(props: AnomalyDetectionOverviewProps) {
 
   // fetch smaple detectors and sample indices
   const fetchData = async () => {
-    await dispatch(
-      getDetectorList(
-        getSampleDetectorsQueryParamsWithDataSouceId(
+    // wait until selected data source is ready before doing dispatch calls if mds is enabled
+    if (!dataSourceEnabled || (MDSOverviewState.selectedDataSourceId && MDSOverviewState.selectedDataSourceId !== "")) {
+      await dispatch(
+        getDetectorList(
+          getSampleDetectorsQueryParamsWithDataSouceId(
+            MDSOverviewState.selectedDataSourceId
+          )
+        )
+      ).catch((error: any) => {
+        console.error('Error getting sample detectors: ', error);
+      });
+      await dispatch(
+        getIndices(
+          GET_SAMPLE_INDICES_QUERY,
           MDSOverviewState.selectedDataSourceId
         )
-      )
-    ).catch((error: any) => {
-      console.error('Error getting sample detectors: ', error);
-    });
-    await dispatch(
-      getIndices(
-        GET_SAMPLE_INDICES_QUERY,
-        MDSOverviewState.selectedDataSourceId
-      )
-    ).catch((error: any) => {
-      console.error('Error getting sample indices: ', error);
-    });
+      ).catch((error: any) => {
+        console.error('Error getting sample indices: ', error);
+      });
+    }
   };
 
   // Create and populate sample index, create and start sample detector
diff --git a/public/redux/reducers/ad.ts b/public/redux/reducers/ad.ts
index 9d456912..ce382ed7 100644
--- a/public/redux/reducers/ad.ts
+++ b/public/redux/reducers/ad.ts
@@ -419,7 +419,7 @@ export const getDetector = (
 export const getDetectorList = (
   queryParams: GetDetectorsQueryParams
 ): APIAction => {
-  const dataSourceId = queryParams.dataSourceId || '';
+  const dataSourceId = queryParams.dataSourceId;
 
   const baseUrl = `${AD_NODE_API.DETECTOR}/_list`;
   const url = dataSourceId
diff --git a/public/redux/reducers/previewAnomalies.ts b/public/redux/reducers/previewAnomalies.ts
index 01e36f29..45ea558a 100644
--- a/public/redux/reducers/previewAnomalies.ts
+++ b/public/redux/reducers/previewAnomalies.ts
@@ -59,7 +59,9 @@ const reducer = handleActions<PreviewAnomalies>(
   initialDetectorsState
 );
 
-export const previewDetector = (requestBody: any, dataSourceId: string = ''): APIAction => {
+export const previewDetector = (requestBody: any): APIAction => {
+  const dataSourceId = requestBody.dataSourceId;
+
   const baseUrl = `..${AD_NODE_API.DETECTOR}/preview`;
   const url =  dataSourceId ? `${baseUrl}/${dataSourceId}` : baseUrl;