diff --git a/hw/xquartz/pbproxy/pbproxy.h b/hw/xquartz/pbproxy/pbproxy.h
index c8321b373..eb1f3bae5 100644
--- a/hw/xquartz/pbproxy/pbproxy.h
+++ b/hw/xquartz/pbproxy/pbproxy.h
@@ -32,6 +32,17 @@
 
 #import  <Foundation/Foundation.h>
 
+#include <AvailabilityMacros.h>
+#if MAC_OS_X_VERSION_MIN_REQUIRED < 1050
+#if __LP64__ || NS_BUILD_32_LIKE_64
+typedef long NSInteger;
+typedef unsigned long NSUInteger;
+#else
+typedef int NSInteger;
+typedef unsigned int NSUInteger;
+#endif
+#endif
+
 #define  Cursor X_Cursor
 #undef _SHAPE_H_
 #include <X11/Xlib.h>