diff --git a/gtk/OGApplication.m b/gtk/OGApplication.m
index 501d388..ae2e06e 100644
--- a/gtk/OGApplication.m
+++ b/gtk/OGApplication.m
@@ -26,8 +26,6 @@
 
 OF_APPLICATION_DELEGATE(OGApplication)
 
-extern Class og_application_delegate(void);
-
 @implementation OGApplication
 + (void)quit
 {
diff --git a/headers/OGApplication.h b/headers/OGApplication.h
index 114bd1c..ff11c5a 100644
--- a/headers/OGApplication.h
+++ b/headers/OGApplication.h
@@ -41,3 +41,5 @@
 	og_application_delegate() {	\
 		return [cls class];	\
 	}
+
+extern Class og_application_delegate(void);
diff --git a/win32/OGApplication.m b/win32/OGApplication.m
index 1ee7168..8f5d2b4 100644
--- a/win32/OGApplication.m
+++ b/win32/OGApplication.m
@@ -36,7 +36,6 @@ LRESULT CALLBACK win32_OGWndProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lpar
 @end
 //==================================================================================================================================
 OF_APPLICATION_DELEGATE(OGApplication)
-extern Class og_application_delegate(void);
 //==================================================================================================================================
 @implementation OGApplication
 //----------------------------------------------------------------------------------------------------------------------------------