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 23dc7ce5107..be03f0c4ad4 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
@@ -1279,7 +1279,7 @@ public void draw(int overlayColor)
 			// Calculate projection matrix
 			float[] projectionMatrix = Mat4.scale(client.getScale(), client.getScale(), 1);
 			Mat4.mul(projectionMatrix, Mat4.projection(viewportWidth, viewportHeight, 50));
-			Mat4.mul(projectionMatrix, Mat4.rotateX((float) -(Math.PI - cameraPitch)));
+			Mat4.mul(projectionMatrix, Mat4.rotateX((float) cameraPitch));
 			Mat4.mul(projectionMatrix, Mat4.rotateY((float) cameraYaw));
 			Mat4.mul(projectionMatrix, Mat4.translate((float) -cameraX, (float) -cameraY, (float) -cameraZ));
 			GL43C.glUniformMatrix4fv(uniProjectionMatrix, false, projectionMatrix);
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/gpu/Mat4.java b/runelite-client/src/main/java/net/runelite/client/plugins/gpu/Mat4.java
index 041107664a2..49010489c40 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/gpu/Mat4.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/gpu/Mat4.java
@@ -97,8 +97,8 @@ public static float[] projection(float w, float h, float n)
 		return new float[]
 			{
 				2 / w, 0, 0, 0,
-				0, 2 / h, 0, 0,
-				0, 0, -1, -1,
+				0, -2 / h, 0, 0,
+				0, 0, 1, 1,
 				0, 0, -2 * n, 0
 			};
 	}