diff --git a/Library/Homebrew/utils.rb b/Library/Homebrew/utils.rb
index 4099c48259..b7158ae982 100644
--- a/Library/Homebrew/utils.rb
+++ b/Library/Homebrew/utils.rb
@@ -178,7 +178,7 @@ def exec_editor *args
   # Invoke bash to evaluate env vars in $EDITOR
   # This also gets us proper argument quoting.
   # See: https://github.com/mxcl/homebrew/issues/5123
-  system "bash", "-c", which_editor + ' "$@"', "--", *args
+  system "bash", "-i", "-c", which_editor + ' "$@"', "--", *args
 end
 
 # GZips the given paths, and returns the gzipped paths