diff --git a/tensorflow/lite/python/op_hint.py b/tensorflow/lite/python/op_hint.py
index c8a031ca17a..bd62ab7250d 100644
--- a/tensorflow/lite/python/op_hint.py
+++ b/tensorflow/lite/python/op_hint.py
@@ -728,10 +728,10 @@ def _find_all_hints_in_nodes(nodes):
   for node in nodes:
     attr = node.attr
     # This is an op hint if it has a FUNCTION_UUID_ATTR, otherwise skip
-    uuid = attr[OpHint.FUNCTION_UUID_ATTR].s
     if (OpHint.FUNCTION_UUID_ATTR not in attr
         or not attr[OpHint.FUNCTION_UUID_ATTR].s):
       continue
+    uuid = attr[OpHint.FUNCTION_UUID_ATTR].s
 
     # Start building function
     call_def = func_calls[uuid]