1 files changed, 2 insertions, 0 deletions

diff --git a/i18nfix.py b/i18nfix.py
index 835e0f1..b00eef3 100644
--- a/i18nfix.py
+++ b/i18nfix.py
@@ -17,6 +17,8 @@ import jinja2.ext
 
 
 def normalize_str(message):
+    if not isinstance(message, str):
+        return message
     message = message.strip()
     # collapse whitespaces (including newlines) into one space.
     message = re.sub("\s+", " ", message)