diff --git a/randr/rrmode.c b/randr/rrmode.c
index 56e5977b5..f5d3f9e54 100644
--- a/randr/rrmode.c
+++ b/randr/rrmode.c
@@ -89,8 +89,10 @@ RRModeCreate(xRRModeInfo * modeInfo, const char *name, ScreenPtr userScreen)
     }
 
     mode->mode.id = FakeClientID(0);
-    if (!AddResource(mode->mode.id, RRModeType, (pointer) mode))
+    if (!AddResource(mode->mode.id, RRModeType, (pointer) mode)) {
+        free(newModes);
         return NULL;
+    }
     modes = newModes;
     modes[num_modes++] = mode;