diff --git a/travis.sh b/travis.sh
index 3831408..4a4405f 100755
--- a/travis.sh
+++ b/travis.sh
@@ -1,7 +1,7 @@
 #!/bin/sh -e
 yarn lint
 for conf in $(ls config/); do
-  if [ $conf == "utils.js" ]; then
+  if [ "$conf" = "utils.js" ]; then
     continue
   fi
   yarn build $conf