diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py
index d61699e035c..da12a0eb109 100644
--- a/Lib/logging/__init__.py
+++ b/Lib/logging/__init__.py
@@ -383,7 +383,7 @@ def format(self, record):
 class StringTemplateStyle(PercentStyle):
     default_format = '${message}'
     asctime_format = '${asctime}'
-    asctime_search = '{asctime'
+    asctime_search = '${asctime'
 
     def __init__(self, fmt):
         self._fmt = fmt or self.default_format