diff --git a/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigation.java b/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigation.java
index 992371e23c..a84664f2a0 100644
--- a/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigation.java
+++ b/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigation.java
@@ -116,10 +116,10 @@ public static SpreadsheetViewportNavigation extendRightPixel(final int value) {
     }
 
     /**
-     * {@see SpreadsheetViewportNavigationExtendUpPixel}
+     * {@see SpreadsheetViewportNavigationExtendPixelUp}
      */
     public static SpreadsheetViewportNavigation extendUpPixel(final int value) {
-        return SpreadsheetViewportNavigationExtendUpPixel.with(value);
+        return SpreadsheetViewportNavigationExtendPixelUp.with(value);
     }
 
     /**
diff --git a/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendUpPixel.java b/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendPixelUp.java
similarity index 87%
rename from src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendUpPixel.java
rename to src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendPixelUp.java
index 31dfd0f1a3..c0eb365cf7 100644
--- a/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendUpPixel.java
+++ b/src/main/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendPixelUp.java
@@ -24,13 +24,13 @@
 
 import java.util.Optional;
 
-final class SpreadsheetViewportNavigationExtendUpPixel extends SpreadsheetViewportNavigationExtendPixel {
+final class SpreadsheetViewportNavigationExtendPixelUp extends SpreadsheetViewportNavigationExtendPixel {
 
-    static SpreadsheetViewportNavigationExtendUpPixel with(final int value) {
-        return new SpreadsheetViewportNavigationExtendUpPixel(value);
+    static SpreadsheetViewportNavigationExtendPixelUp with(final int value) {
+        return new SpreadsheetViewportNavigationExtendPixelUp(value);
     }
 
-    private SpreadsheetViewportNavigationExtendUpPixel(final int value) {
+    private SpreadsheetViewportNavigationExtendPixelUp(final int value) {
         super(value);
     }
 
diff --git a/src/test/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendUpPixelTest.java b/src/test/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendPixelUpTest.java
similarity index 92%
rename from src/test/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendUpPixelTest.java
rename to src/test/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendPixelUpTest.java
index d10666c83d..cd7a2921a5 100644
--- a/src/test/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendUpPixelTest.java
+++ b/src/test/java/walkingkooka/spreadsheet/viewport/SpreadsheetViewportNavigationExtendPixelUpTest.java
@@ -23,7 +23,7 @@
 
 import java.util.Optional;
 
-public final class SpreadsheetViewportNavigationExtendUpPixelTest extends SpreadsheetViewportNavigationPixelTestCase<SpreadsheetViewportNavigationExtendUpPixel> {
+public final class SpreadsheetViewportNavigationExtendPixelUpTest extends SpreadsheetViewportNavigationPixelTestCase<SpreadsheetViewportNavigationExtendPixelUp> {
 
     @Test
     public void testUpdateHome() {
@@ -126,12 +126,12 @@ public void testIsExtend() {
     }
 
     @Override
-    SpreadsheetViewportNavigationExtendUpPixel createSpreadsheetViewportNavigation() {
-        return SpreadsheetViewportNavigationExtendUpPixel.with(2 * ROW_HEIGHT - 1);
+    SpreadsheetViewportNavigationExtendPixelUp createSpreadsheetViewportNavigation() {
+        return SpreadsheetViewportNavigationExtendPixelUp.with(2 * ROW_HEIGHT - 1);
     }
 
     @Override
-    public Class<SpreadsheetViewportNavigationExtendUpPixel> type() {
-        return SpreadsheetViewportNavigationExtendUpPixel.class;
+    public Class<SpreadsheetViewportNavigationExtendPixelUp> type() {
+        return SpreadsheetViewportNavigationExtendPixelUp.class;
     }
 }