diff --git a/source/tools/i18n/extractors/extractors.py b/source/tools/i18n/extractors/extractors.py
index 47b2d101f1..541ffd4078 100644
--- a/source/tools/i18n/extractors/extractors.py
+++ b/source/tools/i18n/extractors/extractors.py
@@ -297,7 +297,7 @@ class CppExtractor(JavascriptExtractor):
     """Extract messages from C++ source code."""
 
 
-class TXTExtractor(Extractor):
+class TxtExtractor(Extractor):
     """Extract messages from plain text files."""
 
     def extract_from_file(self, filepath):