diff --git a/ChangeLog b/ChangeLog
index e3e70f580..28d752af0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2001-08-22  Havoc Pennington  <hp@pobox.com>
+
+	* src/window.c (update_mwm_hints): all the MWM flag tests were
+	backward
+
 2001-08-22  Havoc Pennington  <hp@pobox.com>
 
 	* src/window.c (update_icon): half-ass implementation of 
diff --git a/src/window.c b/src/window.c
index 145bd7f80..4d7c86862 100644
--- a/src/window.c
+++ b/src/window.c
@@ -2990,31 +2990,31 @@ update_mwm_hints (MetaWindow *window)
           toggle_value = FALSE;
         }
       
-      if ((hints->functions & MWM_FUNC_CLOSE) == 0)
+      if ((hints->functions & MWM_FUNC_CLOSE) != 0)
         {
           meta_verbose ("Window %s toggles close via MWM hints\n",
                         window->desc);
           window->mwm_has_close_func = toggle_value;
         }
-      if ((hints->functions & MWM_FUNC_MINIMIZE) == 0)
+      if ((hints->functions & MWM_FUNC_MINIMIZE) != 0)
         {
           meta_verbose ("Window %s toggles minimize via MWM hints\n",
                         window->desc);
           window->mwm_has_minimize_func = toggle_value;
         }
-      if ((hints->functions & MWM_FUNC_MAXIMIZE) == 0)
+      if ((hints->functions & MWM_FUNC_MAXIMIZE) != 0)
         {
           meta_verbose ("Window %s toggles maximize via MWM hints\n",
                         window->desc);
           window->mwm_has_maximize_func = toggle_value;
         }
-      if ((hints->functions & MWM_FUNC_MOVE) == 0)
+      if ((hints->functions & MWM_FUNC_MOVE) != 0)
         {
           meta_verbose ("Window %s toggles move via MWM hints\n",
                         window->desc);
           window->mwm_has_move_func = toggle_value;
         }
-      if ((hints->functions & MWM_FUNC_RESIZE) == 0)
+      if ((hints->functions & MWM_FUNC_RESIZE) != 0)
         {
           meta_verbose ("Window %s toggles resize via MWM hints\n",
                         window->desc);