diff --git a/package.json b/package.json
index 23ba66a..ce705ff 100644
--- a/package.json
+++ b/package.json
@@ -9,9 +9,9 @@
   "scripts": {
     "prepare": "husky install",
     "test": "jest",
-    "build.cpygrammars": "cpy proleap-vb6/src/main/antlr4/io/proleap/vb6/*.g4 ./antlr4ts_out/",
-    "build.antlr4ts": "antlr4ts -visitor ./antlr4ts_out/*.g4",
-    "postbuild.antlr4ts": "rimraf --glob ./antlr4ts_out/*.g4",
+    "build.cpygrammars": "cpy \"./proleap-vb6/src/main/antlr4/io/proleap/vb6/*.g4\" ./antlr4ts_out/",
+    "build.antlr4ts": "antlr4ts -visitor \"./antlr4ts_out/*.g4\"",
+    "postbuild.antlr4ts": "rimraf --glob \"./antlr4ts_out/*.g4\"",
     "build.tsc": "tsc",
     "build": "npm run build.cpygrammars && npm run build.antlr4ts && npm run build.tsc",
     "prepublishOnly": "npm run build && npm run test",