diff --git a/mayan/apps/ocr/backends/pyocr.py b/mayan/apps/ocr/backends/pyocr.py
index baffdf7d0c..eff1936064 100644
--- a/mayan/apps/ocr/backends/pyocr.py
+++ b/mayan/apps/ocr/backends/pyocr.py
@@ -48,12 +48,12 @@ class PyOCR(OCRBackendBase):
                 builder=pyocr.builders.TextBuilder()
             )
         except Exception as exception:
-            error_message = 'Exception calling pyocr with language option: '
-            '{}; {}'.format(self.language, exception)
+            error_message = ('Exception calling pyocr with language option: '
+            '{}; {}').format(self.language, exception)
 
             if self.language not in self.languages:
-                error_message = '{}\nThe requested OCR language "{}" is not '
-                'available and needs to be installed.\n'.format(
+                error_message = ('{}\nThe requested OCR language "{}" is not '
+                'available and needs to be installed.\n').format(
                     error_message, self.language
                 )