diff --git a/Library/Homebrew/utils/ruby.sh b/Library/Homebrew/utils/ruby.sh
index 46353571fd..66da2b313e 100644
--- a/Library/Homebrew/utils/ruby.sh
+++ b/Library/Homebrew/utils/ruby.sh
@@ -1,6 +1,7 @@
 test-ruby () {
   "$1" --enable-frozen-string-literal --disable=gems,did_you_mean,rubyopt -rrubygems -e \
-    "puts Gem::Version.new(RUBY_VERSION.to_s.dup).to_s.split('.').first(2) == Gem::Version.new('$required_ruby_version').to_s.split('.').first(2)"
+    "puts Gem::Version.new(RUBY_VERSION.to_s.dup).to_s.split('.').first(2) == \
+          Gem::Version.new('$required_ruby_version').to_s.split('.').first(2)"
 }
 
 setup-ruby-path() {