diff --git a/sys/src/cmd/cc/com.c b/sys/src/cmd/cc/com.c
index 46a59d49a..418bbae26 100644
--- a/sys/src/cmd/cc/com.c
+++ b/sys/src/cmd/cc/com.c
@@ -1081,6 +1081,11 @@ loop:
 		if(castucom(n))
 			warn(n, "32-bit unsigned complement zero-extended to 64 bits");
 		ccom(l);
+		if(l->type == T){
+			n->left = Z;
+			n->type = T;
+			break;
+		}
 		if(l->op == OCONST) {
 			evconst(n);
 			if(n->op == OCONST)