diff --git a/src/conversion/ensight/part/ensightPartCells.C b/src/conversion/ensight/part/ensightPartCells.C
index d079cb9..17b386c 100644
--- a/src/conversion/ensight/part/ensightPartCells.C
+++ b/src/conversion/ensight/part/ensightPartCells.C
@@ -307,7 +307,7 @@ void Foam::ensightPartCells::writeConnectivity
     const labelUList& pointMap
 ) const
 {
-    writeKeyword(os, key);
+    os.writeKeyword(key);
     os.write(idList.size());
     os.newline();
 
diff --git a/src/conversion/ensight/part/ensightPartFaces.C b/src/conversion/ensight/part/ensightPartFaces.C
index ed03f68..7423e5d 100644
--- a/src/conversion/ensight/part/ensightPartFaces.C
+++ b/src/conversion/ensight/part/ensightPartFaces.C
@@ -259,7 +259,7 @@ void Foam::ensightPartFaces::writeConnectivity
     const labelUList& pointMap
 ) const
 {
-    writeKeyword(os, key);
+    os.writeKeyword(key);
     os.write(idList.size());
     os.newline();
 
diff --git a/src/conversion/ensight/part/ensightPartIO.C b/src/conversion/ensight/part/ensightPartIO.C
index e1e4b35..049a188 100644
--- a/src/conversion/ensight/part/ensightPartIO.C
+++ b/src/conversion/ensight/part/ensightPartIO.C
@@ -179,7 +179,7 @@ void Foam::ensightPart::writeGeometry
         writeHeader(os, true);
 
         // write points
-        writeKeyword(os, "coordinates");
+        os.writeKeyword("coordinates");
         os.write(ptList.nPoints);
         os.newline();
 
@@ -226,7 +226,7 @@ void Foam::ensightPart::writeScalarField
 
         if (perNode)
         {
-            writeKeyword(os, "coordinates");
+            os.writeKeyword("coordinates");
             writeFieldList(os, field, labelUList::null());
         }
         else
@@ -237,7 +237,7 @@ void Foam::ensightPart::writeScalarField
 
                 if (idList.size())
                 {
-                    writeKeyword(os, elementTypes()[elemI]);
+                    os.writeKeyword(elementTypes()[elemI]);
                     writeFieldList(os, field, idList);
                 }
             }
@@ -261,7 +261,7 @@ void Foam::ensightPart::writeVectorField
 
         if (perNode)
         {
-            writeKeyword(os, "coordinates");
+            os.writeKeyword("coordinates");
             writeFieldList(os, field0, labelUList::null());
             writeFieldList(os, field1, labelUList::null());
             writeFieldList(os, field2, labelUList::null());
@@ -274,7 +274,7 @@ void Foam::ensightPart::writeVectorField
 
                 if (idList.size())
                 {
-                    writeKeyword(os, elementTypes()[elemI]);
+                    os.writeKeyword(elementTypes()[elemI]);
                     writeFieldList(os, field0, idList);
                     writeFieldList(os, field1, idList);
                     writeFieldList(os, field2, idList);
diff --git a/src/conversion/ensight/part/ensightPartTemplates.C b/src/conversion/ensight/part/ensightPartTemplates.C
index e2a6200..7b094f4 100644
--- a/src/conversion/ensight/part/ensightPartTemplates.C
+++ b/src/conversion/ensight/part/ensightPartTemplates.C
@@ -44,7 +44,7 @@ void Foam::ensightPart::writeField
 
         if (perNode)
         {
-            writeKeyword(os, "coordinates");
+            os.writeKeyword("coordinates");
             for
             (
                 direction cmpt=0;
@@ -63,7 +63,7 @@ void Foam::ensightPart::writeField
 
                 if (idList.size())
                 {
-                    writeKeyword(os, elementTypes()[elemI]);
+                    os.writeKeyword(elementTypes()[elemI]);
 
                     for
                     (