diff --git a/gfx/webrender_bindings/webrender_ffi.h b/gfx/webrender_bindings/webrender_ffi.h
index b1d67b17a4..eb79974bdf 100644
--- a/gfx/webrender_bindings/webrender_ffi.h
+++ b/gfx/webrender_bindings/webrender_ffi.h
@@ -73,8 +73,6 @@ struct WrPipelineInfo;
 struct WrPipelineIdAndEpoch;
 using WrPipelineIdEpochs = nsTArray<WrPipelineIdAndEpoch>;
 
-const uint64_t ROOT_CLIP_CHAIN = ~0;
-
 }  // namespace wr
 }  // namespace mozilla