diff options
| -rw-r--r-- | glx/glxcmds.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/glx/glxcmds.c b/glx/glxcmds.c index de9c3f039..419cc4626 100644 --- a/glx/glxcmds.c +++ b/glx/glxcmds.c @@ -56,7 +56,7 @@ validGlxScreen(ClientPtr client, int screen, __GLXscreen **pGlxScreen, int *err) /* ** Check if screen exists. */ - if (screen >= screenInfo.numScreens) { + if (screen < 0 || screen >= screenInfo.numScreens) { client->errorValue = screen; *err = BadValue; return FALSE; |