diff --git a/Library/Contributions/cmd/brew-test-bot.rb b/Library/Contributions/cmd/brew-test-bot.rb
index 9af882a984..6ef014a60f 100755
--- a/Library/Contributions/cmd/brew-test-bot.rb
+++ b/Library/Contributions/cmd/brew-test-bot.rb
@@ -326,11 +326,11 @@ class Test
 
     installed_gcc = false
     begin
-      dependencies = formula_object.stable.deps
+      deps = formula_object.stable.deps
       if formula_object.devel && !ARGV.include?('--HEAD')
-        dependencies += formula_object.devel.deps
+        deps += formula_object.devel.deps
       end
-      dependencies.each {|f| CompilerSelector.new(f.to_formula).compiler }
+      deps.each {|f| CompilerSelector.new(f.to_formula).compiler }
 
       CompilerSelector.new(formula_object).compiler
     rescue CompilerSelectionError => e