diff --git a/lang/m2/comp/code.c b/lang/m2/comp/code.c
index 2fc638b98..2bc8f75c5 100644
--- a/lang/m2/comp/code.c
+++ b/lang/m2/comp/code.c
@@ -939,7 +939,7 @@ CodeOper(expr, true_label, false_label)
 				break;
 			}
 			CodePExpr(rightop);
-			C_loc(rightop->nd_type->set_low-leftop->nd_INT);
+			C_loc(leftop->nd_INT - rightop->nd_type->set_low);
 		}
 		else {
 			CodePExpr(rightop);