diff --git a/compiler/lowerer.ts b/compiler/lowerer.ts
index 685558b..f2b8f7c 100644
--- a/compiler/lowerer.ts
+++ b/compiler/lowerer.ts
@@ -419,11 +419,9 @@ export class Lowerer {
         this.program.add(Ops.PushPtr, contineLabel);
         this.program.add(Ops.Jump);
         this.program.setLabel(breakLabel);
-        this.addSourceMap({ index: 0, line: 1, col: 1 });
         if (expr.vtype!.type === "null") {
             this.program.add(Ops.PushNull);
         }
-
         this.breakStack.pop();
     }
 
@@ -438,7 +436,6 @@ export class Lowerer {
             this.lowerStmt(stmt);
         }
         if (expr.kind.expr) {
-            this.addSourceMap(expr.kind.expr.pos);
             this.lowerExpr(expr.kind.expr);
         } else {
             this.program.add(Ops.PushNull);