diff --git a/glamor/glamor_egl.c b/glamor/glamor_egl.c
index f689eb45e3..3f133c1129 100644
--- a/glamor/glamor_egl.c
+++ b/glamor/glamor_egl.c
@@ -810,6 +810,7 @@ glamor_get_formats(ScreenPtr screen,
     if (!eglQueryDmaBufFormatsEXT(glamor_egl->display, num,
                                   (EGLint *) *formats, &num)) {
         free(*formats);
+        *formats = NULL;
         return FALSE;
     }