diff --git a/src/bin/e_hints.c b/src/bin/e_hints.c
index f6c976df7..e5604f795 100644
--- a/src/bin/e_hints.c
+++ b/src/bin/e_hints.c
@@ -1435,7 +1435,8 @@ e_hints_window_e_state_get(E_Border *bd)
     int num, i;
 
     memset(state, 0, sizeof(state));
-    num = ecore_x_window_prop_card32_get(bd->client.win, E_ATOM_WINDOW_STATE, state, sizeof(state));
+    num = ecore_x_window_prop_card32_get(bd->client.win, E_ATOM_WINDOW_STATE,
+      state, sizeof(state) / sizeof(state[0]); /* ugly, but avoids possible future overflow if more states are added */
     if (!num) return;
 
     for (i = 0; (i < num) && (i < sizeof(state)); i++)