diff --git a/Library/Homebrew/formula_installer.rb b/Library/Homebrew/formula_installer.rb
index cc096ddae9..320bd1c1d5 100644
--- a/Library/Homebrew/formula_installer.rb
+++ b/Library/Homebrew/formula_installer.rb
@@ -363,7 +363,7 @@ class FormulaInstaller
       opoo <<~EOS
         #{formula}: #{e.message}
         'conflicts_with \"#{c.name}\"' should be removed from #{formula.path.basename}.
-        EOS
+      EOS
 
       raise if ARGV.homebrew_developer?