diff --git a/src/main/python/any_keycode_dialog.py b/src/main/python/any_keycode_dialog.py
index a716e0a..998c003 100644
--- a/src/main/python/any_keycode_dialog.py
+++ b/src/main/python/any_keycode_dialog.py
@@ -27,14 +27,17 @@ class AnyKeycodeDialog(QDialog):
         self.setLayout(self.layout)
 
         self.value = initial
-        self.txt_entry.setText(Keycode.serialize(initial))
+        ser = Keycode.serialize(initial)
+        if isinstance(ser, int):
+            ser = hex(ser)
+        self.txt_entry.setText(ser)
         self.on_change()
 
     def on_change(self):
         text = self.txt_entry.text()
         value = err = None
         try:
-            value = Keycode.deserialize(text)
+            value = Keycode.deserialize(text, reraise=True)
         except Exception as e:
             err = str(e)
 
diff --git a/src/main/python/keycodes.py b/src/main/python/keycodes.py
index b3407c1..d42a71c 100644
--- a/src/main/python/keycodes.py
+++ b/src/main/python/keycodes.py
@@ -93,7 +93,7 @@ class Keycode:
         return code
 
     @classmethod
-    def deserialize(cls, val):
+    def deserialize(cls, val, reraise=False):
         from any_keycode import AnyKeycode
 
         if isinstance(val, int):
@@ -104,7 +104,8 @@ class Keycode:
         try:
             return anykc.decode(val)
         except Exception:
-            pass
+            if reraise:
+                raise
         return 0