--- a/gfx/gl/GLContext.h
+++ b/gfx/gl/GLContext.h
@@ -47,17 +47,17 @@ namespace mozilla {
   namespace layers {
     class LayerManagerOGL;
     class ColorTextureLayerProgram;
   }
 
 namespace gl {
 class GLContext;
 
-typedef void* SharedTextureHandle;
+typedef uintptr_t SharedTextureHandle;
 
 enum ShaderProgramType {
     RGBALayerProgramType,
     RGBALayerExternalProgramType,
     BGRALayerProgramType,
     RGBXLayerProgramType,
     BGRXLayerProgramType,
     RGBARectLayerProgramType,