diff --git a/src/meshTools/AMIInterpolation/patches/cyclicACMI/cyclicACMIPolyPatch/cyclicACMIPolyPatchI.H b/src/meshTools/AMIInterpolation/patches/cyclicACMI/cyclicACMIPolyPatch/cyclicACMIPolyPatchI.H
index fbb049a725..07f6b07bcb 100644
--- a/src/meshTools/AMIInterpolation/patches/cyclicACMI/cyclicACMIPolyPatch/cyclicACMIPolyPatchI.H
+++ b/src/meshTools/AMIInterpolation/patches/cyclicACMI/cyclicACMIPolyPatch/cyclicACMIPolyPatchI.H
@@ -67,7 +67,7 @@ inline Foam::polyPatch& Foam::cyclicACMIPolyPatch::nonOverlapPatch()
 }
 
 
-inline const scalarField& Foam::cyclicACMIPolyPatch::mask() const
+inline const Foam::scalarField& Foam::cyclicACMIPolyPatch::mask() const
 {
     if (owner())
     {