diff --git a/Source/Core/DolphinNoGUI/PlatformFBDev.cpp b/Source/Core/DolphinNoGUI/PlatformFBDev.cpp
index 04770d46ea..09d9e6d4f3 100644
--- a/Source/Core/DolphinNoGUI/PlatformFBDev.cpp
+++ b/Source/Core/DolphinNoGUI/PlatformFBDev.cpp
@@ -35,7 +35,7 @@ public:
   void SetTitle(const std::string& string) override;
   void MainLoop() override;
 
-  WindowSystemInfo GetWindowSystemInfo() const;
+  WindowSystemInfo GetWindowSystemInfo() const override;
 
 private:
   bool OpenFramebuffer();
diff --git a/Source/Core/DolphinNoGUI/PlatformX11.cpp b/Source/Core/DolphinNoGUI/PlatformX11.cpp
index 87d401cc72..8eb8f2b802 100644
--- a/Source/Core/DolphinNoGUI/PlatformX11.cpp
+++ b/Source/Core/DolphinNoGUI/PlatformX11.cpp
@@ -37,7 +37,7 @@ public:
   void SetTitle(const std::string& string) override;
   void MainLoop() override;
 
-  WindowSystemInfo GetWindowSystemInfo() const;
+  WindowSystemInfo GetWindowSystemInfo() const override;
 
 private:
   void CloseDisplay();