diff --git a/hw/xfree86/dri2/dri2ext.c b/hw/xfree86/dri2/dri2ext.c
index ca2e02970..d1d52a427 100644
--- a/hw/xfree86/dri2/dri2ext.c
+++ b/hw/xfree86/dri2/dri2ext.c
@@ -114,7 +114,7 @@ ProcDRI2Connect(ClientPtr client)
     ScreenPtr pScreen;
     int fd;
     const char *driverName;
-    char *busId;
+    char *busId = NULL;
     unsigned int sareaHandle;
 
     REQUEST_SIZE_MATCH(xDRI2ConnectReq);