1 files changed, 2 insertions, 2 deletions
diff --git a/generic/tkBusy.c b/generic/tkBusy.c
index 5439969..8fd53fa 100644
--- a/generic/tkBusy.c
+++ b/generic/tkBusy.c
@@ -687,8 +687,8 @@ GetBusy(
     }
     hPtr = Tcl_FindHashEntry(busyTablePtr, (char *) tkwin);
     if (hPtr == NULL) {
-	Tcl_AppendResult(interp, "can't find busy window \"",
-		Tcl_GetString(windowObj), "\"", NULL);
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"can't find busy window \"%s\"", Tcl_GetString(windowObj)));
 	Tcl_SetErrorCode(interp, "TK", "LOOKUP", "BUSY", NULL);
 	return NULL;
     }