diff --git a/src/com/gabongao/jvm/instructions/OperandsInstruction.java b/src/com/gabongao/jvm/instructions/OperandsInstruction.java
index 7386a0c..f2fde4a 100644
--- a/src/com/gabongao/jvm/instructions/OperandsInstruction.java
+++ b/src/com/gabongao/jvm/instructions/OperandsInstruction.java
@@ -267,7 +267,7 @@ public class OperandsInstruction implements Instruction {
 
         @Override
         public void execute(Frame frame) {
-            frame.getOperandStack().pushInt((int) val);
+            frame.getOperandStack().pushInt((short) val);
         }
     }