diff --git a/Library/Homebrew/shims/super/sed b/Library/Homebrew/shims/super/sed
index 420e39669f..7b1313dac0 100755
--- a/Library/Homebrew/shims/super/sed
+++ b/Library/Homebrew/shims/super/sed
@@ -1,7 +1,9 @@
 #!/bin/bash
-if [[ $HOMEBREW_CCCFG == *s* ]]; then
+
+if [[ "$HOMEBREW_CCCFG" = *s* ]]
+then
   # Fix issue with sed barfing on unicode characters on Mountain Lion
   unset LC_ALL
-  export LC_CTYPE='C'
+  export LC_CTYPE="C"
 fi
 exec /usr/bin/sed "$@"