diff --git a/compiler/codegen/func_info.go b/compiler/codegen/func_info.go
index 2e8747b..8f1d579 100644
--- a/compiler/codegen/func_info.go
+++ b/compiler/codegen/func_info.go
@@ -142,10 +142,10 @@ func (self *funcInfo) exitScope(endPC int) {
 	self.breaks = self.breaks[:len(self.breaks)-1]
 
 	a := self.getJmpArgA()
-	for i := range pendingBreakJmps {
-		sBx := self.pc() - pendingBreakJmps[i]
+	for idx := range pendingBreakJmps {
+		sBx := self.pc() - pendingBreakJmps[idx]
 		i := (sBx+MAXARG_sBx)<<14 | a<<6 | OP_JMP
-		self.insts[pendingBreakJmps[i]] = uint32(i)
+		self.insts[pendingBreakJmps[idx]] = uint32(i)
 	}
 
 	self.scopeLv--
diff --git a/test/basic.lk b/test/basic.lk
index c2e9a9b..b108a7c 100644
--- a/test/basic.lk
+++ b/test/basic.lk
@@ -27,6 +27,16 @@ if #long >= 0 and '' {
     func(long, #long)
 }
 
+while true {
+    if long != nil {
+        print('break')
+    } else {
+        break
+    }
+    os.sleep(100)
+    long = nil
+}
+
 func('' and true and 1 ? 'support ternary exp' : 'unreachable')
 func(6 ~/ 2, 6 & 2, 6 / 2)
 func(_VERSION, math.pi)