diff --git a/source/shared_lib/sources/platform/macosx/gl_wrap.mm b/source/shared_lib/sources/platform/macosx/gl_wrap.mm
index 1ade5f30d..be68a5cdb 100644
--- a/source/shared_lib/sources/platform/macosx/gl_wrap.mm
+++ b/source/shared_lib/sources/platform/macosx/gl_wrap.mm
@@ -180,7 +180,7 @@ BOOL makeGLDisplayListFirst(unichar first, int count, GLint base, NSFont *font,
    return retval;
 }
 
-void createGlFontBitmaps(GLuint &base, const string &type, int size, int width,
+void createGlFontBitmaps(GLuint32 &base, const string &type, int size, int width,
 						 int charCount, Shared::Graphics::FontMetrics &metrics) {
 	
 	
@@ -199,7 +199,7 @@ void createGlFontBitmaps(GLuint &base, const string &type, int size, int width,
 
 }
 
-void createGlFontOutlines(GLuint &base, const string &type, int width,
+void createGlFontOutlines(GLuint32 &base, const string &type, int width,
 						  float depth, int charCount, Shared::Graphics::FontMetrics &metrics) {
 	NOIMPL;
 }