diff --git a/util/ego/cs/cs_stack.c b/util/ego/cs/cs_stack.c
index ffabc089b..2e5f4a1de 100644
--- a/util/ego/cs/cs_stack.c
+++ b/util/ego/cs/cs_stack.c
@@ -33,7 +33,7 @@ Push(tkp)
 
 		free_token->tk_vn = tkp->tk_vn;
 		free_token->tk_size = tkp->tk_size;
-		free_token++->tk_lfirst = tkp->tk_lfirst;
+		(free_token++)->tk_lfirst = tkp->tk_lfirst;
 	}
 }