diff --git a/libexec/ruby-package-build b/libexec/ruby-package-build
index 5ac4a346..4c811122 100755
--- a/libexec/ruby-package-build
+++ b/libexec/ruby-package-build
@@ -59,7 +59,7 @@ prefix="/tmp/ruby-build/--------------------------------------------------------
 package_dir="${package}.$(ruby-package platform)"
 
 if [ -z "$resume" ]; then
-  "${bin_root}/ruby-build" $verbose "$definition" "$prefix"
+  ruby-build $verbose "$definition" "$prefix"
 fi
 
 cwd="$(pwd)"