diff --git a/src/lib/ecore_x/xlib/ecore_x_randr.c b/src/lib/ecore_x/xlib/ecore_x_randr.c
index ef1ea40521..8ba1692f51 100644
--- a/src/lib/ecore_x/xlib/ecore_x_randr.c
+++ b/src/lib/ecore_x/xlib/ecore_x_randr.c
@@ -1109,6 +1109,12 @@ ecore_x_randr_window_crtcs_get(Ecore_X_Window window, int *num)
         XRRScreenResources *res = NULL;
         Ecore_X_Randr_Crtc *ret = NULL;
 
+        if (ncrtcs <= 0)
+          {
+             free(crtcs);
+             return NULL;
+          }
+
         /* make sure we can allocate our return variable */
         if (!(ret = calloc(1, ncrtcs * sizeof(Ecore_X_Randr_Crtc))))
           {