diff --git a/src/item_location.cpp b/src/item_location.cpp
index 46814d8045558..dadcaa7b53046 100644
--- a/src/item_location.cpp
+++ b/src/item_location.cpp
@@ -1183,7 +1183,7 @@ bool item_location::can_reload_with( const item_location &ammo, bool now ) const
     return reloadable->can_reload_with( *ammo, now );
 }
 
-int item_location::get_quality( const std::string &quality, const bool boiling ) const
+int item_location::get_quality( const std::string &quality, bool boiling ) const
 {
     const item_location tool = *this;
     quality_id qualityid( quality );
diff --git a/src/item_location.h b/src/item_location.h
index d5bc5db836e01..f61c5bf2b96cb 100644
--- a/src/item_location.h
+++ b/src/item_location.h
@@ -168,7 +168,7 @@ class item_location
         * @param quality the name of quality to check the level of
         * @param boiling true if the item is required to be empty to have the boiling quality
         */
-        int get_quality( const std::string &quality, const bool boiling ) const;
+        int get_quality( const std::string &quality, bool boiling ) const;
 
     private:
         class impl;
diff --git a/src/talker.h b/src/talker.h
index 4e432bb187d91..293a3c1a309c2 100644
--- a/src/talker.h
+++ b/src/talker.h
@@ -646,7 +646,7 @@ class const_talker
         virtual int climate_control_str_chill() const {
             return 0;
         }
-        virtual int get_quality( const std::string &, const bool ) const {
+        virtual int get_quality( const std::string &, bool ) const {
             return 0;
         }
 };
diff --git a/src/talker_item.cpp b/src/talker_item.cpp
index a0ded6c14f66b..0ca905b7aba29 100644
--- a/src/talker_item.cpp
+++ b/src/talker_item.cpp
@@ -126,7 +126,7 @@ int talker_item_const::get_weight() const
     return units::to_milligram( me_it_const->get_item()->weight() );
 }
 
-int talker_item_const::get_quality( const std::string &quality, const bool boiling ) const
+int talker_item_const::get_quality( const std::string &quality, bool boiling ) const
 {
     return me_it_const->get_quality( quality, boiling );
 }
diff --git a/src/talker_item.h b/src/talker_item.h
index 5bb12a394dcde..d0e549ccbd29f 100644
--- a/src/talker_item.h
+++ b/src/talker_item.h
@@ -59,7 +59,7 @@ class talker_item_const: public const_talker_cloner<talker_item_const>
         int encumbrance_at( bodypart_id & ) const override;
         int get_volume() const override;
         int get_weight() const override;
-        int get_quality( const std::string &, const bool boiling ) const override;
+        int get_quality( const std::string &, bool boiling ) const override;
 
     private:
         const item_location *me_it_const{};