diff --git a/apps/converter/api.py b/apps/converter/api.py
index 2c3269fab9..3c0b2ea08d 100644
--- a/apps/converter/api.py
+++ b/apps/converter/api.py
@@ -106,7 +106,7 @@ def get_page_count(input_filepath):
                 input_filepath = office_converter.output_filepath
 
         except OfficeConversionError:
-                raise UnknownFileFormat('office converter exception')
+            raise UnknownFileFormat('office converter exception')
 
     return backend.get_page_count(input_filepath)