diff --git a/Makefile b/Makefile
index 1f78dd60..13fed85d 100644
--- a/Makefile
+++ b/Makefile
@@ -31,7 +31,7 @@ build: vendor
 	# be used and `box.json.dist` must include the `tests` directory
 	#
 	composer install --prefer-dist
-	php -d zend.enable_gc=0 bin/php-scoper.php add-prefix --force
+	php -d zend.enable_gc=0 bin/php-scoper add-prefix --force
 	cd build && composer dump-autoload --classmap-authoritative
 	php -d zend.enable_gc=0 $(BOX) build
 	# Install back all the dependencies
diff --git a/bin/php-scoper.php b/bin/php-scoper
similarity index 100%
rename from bin/php-scoper.php
rename to bin/php-scoper
diff --git a/box.json.dist b/box.json.dist
index f8d345ab..75e58966 100644
--- a/box.json.dist
+++ b/box.json.dist
@@ -1,7 +1,7 @@
 {
     "base-path": "build",
     "chmod": "0755",
-    "main": "bin/php-scoper.php",
+    "main": "bin/php-scoper",
     "output": "bin/php-scoper.phar",
     "directories": [
         "src",