diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/gpu/GpuPlugin.java b/runelite-client/src/main/java/net/runelite/client/plugins/gpu/GpuPlugin.java
index d0c7fce8bc..3bd04c4132 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/gpu/GpuPlugin.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/gpu/GpuPlugin.java
@@ -235,8 +235,6 @@ public class GpuPlugin extends Plugin implements DrawCallbacks
 	 */
 	private int tempUvOffset;
 
-	private int lastViewportWidth;
-	private int lastViewportHeight;
 	private int lastCanvasWidth;
 	private int lastCanvasHeight;
 	private int lastStretchedCanvasWidth;
@@ -383,7 +381,7 @@ public class GpuPlugin extends Plugin implements DrawCallbacks
 				// force rebuild of main buffer provider to enable alpha channel
 				client.resizeCanvas();
 
-				lastViewportWidth = lastViewportHeight = lastCanvasWidth = lastCanvasHeight = -1;
+				lastCanvasWidth = lastCanvasHeight = -1;
 				lastStretchedCanvasWidth = lastStretchedCanvasHeight = -1;
 				lastAntiAliasingMode = null;