diff --git a/desmume/src/gtk/main.cpp b/desmume/src/gtk/main.cpp
index 65966139d..e0e4a7ecc 100644
--- a/desmume/src/gtk/main.cpp
+++ b/desmume/src/gtk/main.cpp
@@ -69,6 +69,9 @@
 #undef GPOINTER_TO_INT
 #define GPOINTER_TO_INT(p) ((gint)  (glong) (p))
 
+#undef GPOINTER_TO_UINT
+#define GPOINTER_TO_UINT(p) ((guint)  (glong) (p))
+
 #define EMULOOP_PRIO (G_PRIORITY_HIGH_IDLE + 20)
 
 #if GTK_CHECK_VERSION(2,10,0)