diff --git a/lib/generate_contributions.py b/lib/generate_contributions.py
index ea912ddf4c..3cab144f4d 100755
--- a/lib/generate_contributions.py
+++ b/lib/generate_contributions.py
@@ -108,7 +108,7 @@ def collate_incomplete(contributers):
               missing_licence.append(contributer.name)
 
     return '''WARNING!
-The following contributers to not have a CREDITS entry:
+The following contributers do not have a CREDITS entry:
     %s
 
 These ones have no explicit licence statement: