diff --git a/Gems/GraphModel/Code/Include/GraphModel/Integration/GraphController.h b/Gems/GraphModel/Code/Include/GraphModel/Integration/GraphController.h
index a8051e16e4..3705b91b15 100644
--- a/Gems/GraphModel/Code/Include/GraphModel/Integration/GraphController.h
+++ b/Gems/GraphModel/Code/Include/GraphModel/Integration/GraphController.h
@@ -78,8 +78,8 @@ namespace GraphModelIntegration
         GraphModel::NodePtrList GetSelectedNodes() override;
         void SetSelected(GraphModel::NodePtrList nodes, bool selected) override;
         void ClearSelection() override;
-        void EnableNode(GraphModel::NodePtr node);
-        void DisableNode(GraphModel::NodePtr node);
+        void EnableNode(GraphModel::NodePtr node) override;
+        void DisableNode(GraphModel::NodePtr node) override;
         void CenterOnNodes(GraphModel::NodePtrList nodes) override;
         AZ::Vector2 GetMajorPitch() const override;
 
@@ -166,7 +166,7 @@ namespace GraphModelIntegration
         void EnableNodes(const AZStd::unordered_set<GraphCanvas::NodeId>& nodeIds) override;
         void DisableNodes(const AZStd::unordered_set<GraphCanvas::NodeId>& nodeIds) override;
 
-        AZStd::string GetDataTypeString(const AZ::Uuid& typeId);
+        AZStd::string GetDataTypeString(const AZ::Uuid& typeId) override;
 
         //! This is where we find all of the graph metadata (like node positions, comments, etc) and store it in the node graph for serialization
         // CJS TODO: Use this instead of the above undo functions
diff --git a/Gems/GraphModel/Code/Tests/MockGraphCanvas.h b/Gems/GraphModel/Code/Tests/MockGraphCanvas.h
index e66a47a79c..774e6aab9f 100644
--- a/Gems/GraphModel/Code/Tests/MockGraphCanvas.h
+++ b/Gems/GraphModel/Code/Tests/MockGraphCanvas.h
@@ -137,8 +137,8 @@ namespace MockGraphCanvasServices
         ~MockExtenderSlotComponent() = default;
 
         // Component overrides ...
-        void Activate();
-        void Deactivate();
+        void Activate() override;
+        void Deactivate() override;
         ////
 
         // ExtenderSlotComponent overrides ...
@@ -177,7 +177,7 @@ namespace MockGraphCanvasServices
         void SetTooltip(const AZStd::string& tooltip) override;
         void SetTranslationKeyedTooltip(const GraphCanvas::TranslationKeyedString& tooltip) override;
         const AZStd::string GetTooltip() const override;
-        void SetShowInOutliner(bool showInOutliner);
+        void SetShowInOutliner(bool showInOutliner) override;
         bool ShowInOutliner() const override;
         void AddSlot(const AZ::EntityId& slotId) override;
         void RemoveSlot(const AZ::EntityId& slotId) override;
diff --git a/Gems/GraphModel/Code/Tests/TestEnvironment.h b/Gems/GraphModel/Code/Tests/TestEnvironment.h
index 908a4990e1..a9b2a548f4 100644
--- a/Gems/GraphModel/Code/Tests/TestEnvironment.h
+++ b/Gems/GraphModel/Code/Tests/TestEnvironment.h
@@ -87,7 +87,7 @@ namespace GraphModelIntegrationTest
         const char* GetTitle() const override;
 
     protected:
-        void RegisterSlots();
+        void RegisterSlots() override;
 
         AZStd::shared_ptr<TestGraphContext> m_graphContext = nullptr;
     };
@@ -108,7 +108,7 @@ namespace GraphModelIntegrationTest
         const char* GetTitle() const override;
 
     protected:
-        void RegisterSlots();
+        void RegisterSlots() override;
 
         AZStd::shared_ptr<TestGraphContext> m_graphContext = nullptr;
     };
@@ -129,7 +129,7 @@ namespace GraphModelIntegrationTest
         const char* GetTitle() const override;
 
     protected:
-        void RegisterSlots();
+        void RegisterSlots() override;
 
         AZStd::shared_ptr<TestGraphContext> m_graphContext = nullptr;
     };