diff --git a/hwb1/src/hwb1/MyApplet.java b/hwb1/src/hwb1/MyApplet.java
index 4872949..843f90f 100644
--- a/hwb1/src/hwb1/MyApplet.java
+++ b/hwb1/src/hwb1/MyApplet.java
@@ -52,7 +52,7 @@ public class MyApplet extends Applet {
         short length;
         byte[] buffer = apdu.getBuffer();
         
-        if (buffer[ISO7816.OFFSET_CLA] != 0x80) {
+        if (buffer[ISO7816.OFFSET_CLA] != (byte)0x80) {
             ISOException.throwIt(ISO7816.SW_CLA_NOT_SUPPORTED);
         } else {
             byte instruction = buffer[ISO7816.OFFSET_INS];
@@ -90,6 +90,8 @@ public class MyApplet extends Applet {
                     ISOException.throwIt(ISO7816.SW_INS_NOT_SUPPORTED);
                     break;
             }
+            
+            ISOException.throwIt(ISO7816.SW_NO_ERROR);
         }
     }
 }