Fix some typos in comments.

[ci skip]

1 files changed, 1 insertions, 1 deletions

diff --git a/ci/travis.rb b/ci/travis.rb
index 063c6acb07..ffeba995de 100755
--- a/ci/travis.rb
+++ b/ci/travis.rb
@@ -120,7 +120,7 @@ class Build
 
   def env
     if activesupport? && !isolated?
-      # There is a known issue with the listen tests that casuses files to be
+      # There is a known issue with the listen tests that causes files to be
       # incorrectly GC'ed even when they are still in-use. The current is to
       # only run them in isolation to avoid randomly failing our test suite.
       { 'LISTEN' => '0' }