1 files changed, 4 insertions, 0 deletions
diff --git a/src/glx/glxext.c b/src/glx/glxext.c
index 4a195bd40ba..0838cd19251 100644
--- a/src/glx/glxext.c
+++ b/src/glx/glxext.c
@@ -677,6 +677,10 @@ static GLboolean
    psc->serverGLXexts =
       __glXQueryServerString(dpy, priv->majorOpcode, screen, GLX_EXTENSIONS);
 
+   if (psc->serverGLXexts == NULL) {
+      return GL_FALSE;
+   }
+
    LockDisplay(dpy);
 
    psc->configs = NULL;