diff --git a/win/ttkWinXPTheme.c b/win/ttkWinXPTheme.c
index 96d0f1ffd..cd5c8ea08 100644
--- a/win/ttkWinXPTheme.c
+++ b/win/ttkWinXPTheme.c
@@ -770,7 +770,7 @@ static void TabElementDraw(
     int partId = elementData->info->partId;
     int isSelected = (state & TTK_STATE_SELECTED);
     int stateId = Ttk_StateTableLookup(elementData->info->statemap, state);
-    RECT rc = BoxToRect(b);
+    RECT rc;
 
     if (mainInfoPtr != NULL) {
 	nbTabsStickBit = (Ttk_PositionSpec) mainInfoPtr->ttkNbTabsStickBit;