diff --git a/bin/prettier b/bin/prettier.js
similarity index 100%
rename from bin/prettier
rename to bin/prettier.js
diff --git a/package.json b/package.json
index 70ff7d914..dde29063c 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "prettier",
   "version": "0.0.3",
   "bin": {
-    "prettier": "./bin/prettier"
+    "prettier": "./bin/prettier.js"
   },
   "main": "./index.js",
   "dependencies": {
@@ -19,7 +19,7 @@
   },
   "scripts": {
     "test": "jest",
-    "format": "./bin/prettier --write src/printer.js"
+    "format": "./bin/prettier.js --write src/printer.js"
   },
   "jest": {
     "setupFiles": [