diff --git a/wayland_protocol_codegen.go b/wayland_protocol_codegen.go
index 06387ab..3413993 100644
--- a/wayland_protocol_codegen.go
+++ b/wayland_protocol_codegen.go
@@ -88,7 +88,7 @@
 	ctx.RegisterModuleType("wayland_protocol_codegen", codegenFactory)
 
 	ctx.FinalDepsMutators(func(ctx android.RegisterMutatorsContext) {
-		ctx.BottomUp("wayland_protocol_codegen_tool_deps", toolDepsMutator).Parallel()
+		ctx.BottomUp("wayland_protocol_codegen_tool_deps", toolDepsMutator)
 	})
 }