diff --git a/capsulflask/shared.py b/capsulflask/shared.py
index 14ba9b0..84b0896 100644
--- a/capsulflask/shared.py
+++ b/capsulflask/shared.py
@@ -56,7 +56,7 @@ def authorized_as_hub(headers):
 
 def my_exec_info_message(exec_info):
   traceback_result = traceback.format_tb(exec_info[2])
-  if isinstance(traceback_result, list) {
+  if isinstance(traceback_result, list):
     traceback_result = "\n".join(traceback_result)
-  }
+    
   return f"{exec_info[0].__module__}.{exec_info[0].__name__}: {exec_info[1]}: {traceback_result}"
\ No newline at end of file