diff --git a/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigation.java b/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigation.java
index 1d38876941..4dcc2d8a44 100644
--- a/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigation.java
+++ b/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigation.java
@@ -74,10 +74,10 @@ public static SpreadsheetViewportNavigation extendRow(final SpreadsheetRowRefere
     }
 
     /**
-     * {@see SpreadsheetViewportNavigationExtendDownPixel}
+     * {@see SpreadsheetViewportNavigationExtendPixelDown}
      */
     public static SpreadsheetViewportNavigation extendDownPixel(final int value) {
-        return SpreadsheetViewportNavigationExtendDownPixel.with(value);
+        return SpreadsheetViewportNavigationExtendPixelDown.with(value);
     }
 
     /**
diff --git a/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendDownPixel.java b/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendPixelDown.java
similarity index 87%
rename from src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendDownPixel.java
rename to src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendPixelDown.java
index 365b71b8a1..cb532a82d6 100644
--- a/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendDownPixel.java
+++ b/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendPixelDown.java
@@ -24,13 +24,13 @@
 
 import java.util.Optional;
 
-final class SpreadsheetViewportNavigationExtendDownPixel extends SpreadsheetViewportNavigationExtendPixel {
+final class SpreadsheetViewportNavigationExtendPixelDown extends SpreadsheetViewportNavigationExtendPixel {
 
-    static SpreadsheetViewportNavigationExtendDownPixel with(final int value) {
-        return new SpreadsheetViewportNavigationExtendDownPixel(value);
+    static SpreadsheetViewportNavigationExtendPixelDown with(final int value) {
+        return new SpreadsheetViewportNavigationExtendPixelDown(value);
     }
 
-    private SpreadsheetViewportNavigationExtendDownPixel(final int value) {
+    private SpreadsheetViewportNavigationExtendPixelDown(final int value) {
         super(value);
     }
 
diff --git a/src/test/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendDownPixelTest.java b/src/test/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendPixelDownTest.java
similarity index 92%
rename from src/test/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendDownPixelTest.java
rename to src/test/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendPixelDownTest.java
index 6f7e2a7a66..3988379d40 100644
--- a/src/test/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendDownPixelTest.java
+++ b/src/test/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendPixelDownTest.java
@@ -23,7 +23,7 @@
 
 import java.util.Optional;
 
-public final class SpreadsheetViewportNavigationExtendDownPixelTest extends SpreadsheetViewportNavigationPixelTestCase<SpreadsheetViewportNavigationExtendDownPixel> {
+public final class SpreadsheetViewportNavigationExtendPixelDownTest extends SpreadsheetViewportNavigationPixelTestCase<SpreadsheetViewportNavigationExtendPixelDown> {
 
     @Test
     public void testUpdateHome() {
@@ -126,12 +126,12 @@ public void testIsExtend() {
     }
 
     @Override
-    SpreadsheetViewportNavigationExtendDownPixel createSpreadsheetViewportNavigation() {
-        return SpreadsheetViewportNavigationExtendDownPixel.with(2 * ROW_HEIGHT - 1);
+    SpreadsheetViewportNavigationExtendPixelDown createSpreadsheetViewportNavigation() {
+        return SpreadsheetViewportNavigationExtendPixelDown.with(2 * ROW_HEIGHT - 1);
     }
 
     @Override
-    public Class<SpreadsheetViewportNavigationExtendDownPixel> type() {
-        return SpreadsheetViewportNavigationExtendDownPixel.class;
+    public Class<SpreadsheetViewportNavigationExtendPixelDown> type() {
+        return SpreadsheetViewportNavigationExtendPixelDown.class;
     }
 }