diff --git a/group.c b/group.c
index 929f9c2..70bd8b6 100644
--- a/group.c
+++ b/group.c
@@ -105,7 +105,7 @@ group_show(struct screen_ctx *sc, struct group_ctx *gc)
 		if (cc->stackingorder > gc->highstack)
 			gc->highstack = cc->stackingorder;
 	}
-	winlist = (Window *) xcalloc(sizeof(*winlist), (gc->highstack + 1));
+	winlist = xcalloc((gc->highstack + 1), sizeof(*winlist));
 
 	/*
 	 * Invert the stacking order as XRestackWindows() expects them