diff --git a/packages/proto-signing/package.json b/packages/proto-signing/package.json
index 508a6a41..a5a2dd62 100644
--- a/packages/proto-signing/package.json
+++ b/packages/proto-signing/package.json
@@ -41,7 +41,7 @@
     "test": "yarn build-or-skip && yarn test-node",
     "coverage": "nyc --reporter=text --reporter=lcov yarn test --quiet",
     "pack-web": "yarn build-or-skip && webpack --mode development --config webpack.web.config.js",
-    "preget-proto": "rm -rf proto",
+    "preget-proto": "shx rm -rf proto",
     "get-proto": "REF=v0.40.0-rc3 ./scripts/get-proto.sh",
     "predefine-proto": "./scripts/predefine-proto.sh",
     "define-proto": "./scripts/define-proto.sh",