diff --git a/src/OpenFOAM/meshes/polyMesh/polyPatches/basic/coupled/coupledPolyPatch.C b/src/OpenFOAM/meshes/polyMesh/polyPatches/basic/coupled/coupledPolyPatch.C
index ba92292d42..608bfaeea2 100644
--- a/src/OpenFOAM/meshes/polyMesh/polyPatches/basic/coupled/coupledPolyPatch.C
+++ b/src/OpenFOAM/meshes/polyMesh/polyPatches/basic/coupled/coupledPolyPatch.C
@@ -300,7 +300,7 @@ void Foam::coupledPolyPatch::calcTransformTensors
         {
             // Rotation, no separation
 
-            // Assume per-face differening transformation, correct later
+            // Assume per-face differing transformation, correct later
 
             separation_.setSize(0);