diff --git a/Resources/MetalShaders/shaders.metal b/Resources/MetalShaders/shaders.metal
index 0e8e440d2..5f334992f 100644
--- a/Resources/MetalShaders/shaders.metal
+++ b/Resources/MetalShaders/shaders.metal
@@ -56,10 +56,10 @@ kernel void kernelIdentity(texture2d<float, access::read> inTexture [[ texture(0
                            texture2d<float, access::write> outTexture [[ texture(1) ]],
                            uint2 gid [[ thread_position_in_grid ]])
 {
-    uint inWidth = inTexture.get_width();
-    uint outWidth = outTexture.get_width();
+    int inWidth = inTexture.get_width();
+    int outWidth = outTexture.get_width();
     
-    uint offset = (inWidth - outWidth) > 0 ? (inWidth - outWidth) / 2 : 0;
+    int offset = (inWidth - outWidth) > 0 ? (inWidth - outWidth) / 2 : 0;
     uint2 adjusted = uint2(gid.x + offset, gid.y);
     float4 outColor = inTexture.read(adjusted);
     outTexture.write(outColor, gid);