diff --git a/build/linux/platform_specific_code/juce_linux_Fonts.cpp b/build/linux/platform_specific_code/juce_linux_Fonts.cpp
index 937b5b0201..2907a70dc3 100644
--- a/build/linux/platform_specific_code/juce_linux_Fonts.cpp
+++ b/build/linux/platform_specific_code/juce_linux_Fonts.cpp
@@ -524,7 +524,7 @@ public:
                 sansSerif.add (faces[i]->getFamilyName());
     }
 
-    juce_DeclareSingleton_SingleThreaded_Minimal (FreeTypeInterface, false);
+    juce_DeclareSingleton_SingleThreaded_Minimal (FreeTypeInterface);
 
 private:
     //==============================================================================
diff --git a/build/win32/platform_specific_code/juce_win32_Messaging.cpp b/build/win32/platform_specific_code/juce_win32_Messaging.cpp
index da7bbb22e1..22e63ac414 100644
--- a/build/win32/platform_specific_code/juce_win32_Messaging.cpp
+++ b/build/win32/platform_specific_code/juce_win32_Messaging.cpp
@@ -224,7 +224,6 @@ void MessageManager::doPlatformSpecificInitialisation()
 
     wc.cbSize         = sizeof (wc);
     wc.lpfnWndProc    = (WNDPROC) juce_MessageWndProc;
-    wc.cbClsExtra     = 0;
     wc.cbWndExtra     = 4;
     wc.hInstance      = hmod;
     wc.lpszClassName  = className;