--- a/gfx/wr/webrender/src/shade.rs
+++ b/gfx/wr/webrender/src/shade.rs
@@ -952,17 +952,17 @@ impl Shaders {
             ps_text_run_dual_source,
             ps_split_composite,
             composite_rgba,
             composite_yuv,
         })
     }
 
     fn get_yuv_shader_index(buffer_kind: ImageBufferKind) -> usize {
-        (buffer_kind as usize)
+        buffer_kind as usize
     }
 
     pub fn get_composite_shader(
         &mut self,
         format: CompositeSurfaceFormat,
         buffer_kind: ImageBufferKind,
     ) -> &mut LazilyCompiledShader {
         match format {