diff --git a/bin/ruby-build b/bin/ruby-build
index 08ff6000..1de033d7 100755
--- a/bin/ruby-build
+++ b/bin/ruby-build
@@ -1,4 +1,4 @@
-#! /usr/bin/env bash
+#!/usr/bin/env bash
 
 set -E
 exec 3<&2 # preserve original stderr at fd 3