diff --git a/src/mesa/drivers/x11/fakeglx.c b/src/mesa/drivers/x11/fakeglx.c
index 7569fb05c16..ee1cdfcc6c9 100644
--- a/src/mesa/drivers/x11/fakeglx.c
+++ b/src/mesa/drivers/x11/fakeglx.c
@@ -52,6 +52,9 @@
 #include "xfonts.h"
 #include "xmesaP.h"
 
+#ifdef __VMS
+#define _mesa_sprintf sprintf
+#endif
 
 /* This indicates the client-side GLX API and GLX encoder version. */
 #define CLIENT_MAJOR_VERSION 1