diff --git a/src/OpenFOAM/primitives/functions/DataEntry/CSV/CSV.H b/src/OpenFOAM/primitives/functions/DataEntry/CSV/CSV.H
index e5d0d23055bbb9da55e80e514aac5439c490f702..e6fb30a20f391e473176355098750086e182c4a8 100644
--- a/src/OpenFOAM/primitives/functions/DataEntry/CSV/CSV.H
+++ b/src/OpenFOAM/primitives/functions/DataEntry/CSV/CSV.H
@@ -131,7 +131,7 @@ public:
         (
             const word& entryName,
             const dictionary& dict,
-            const word& ext = "Ceoffs"
+            const word& ext = "Coeffs"
         );
 
         //- Copy constructor