diff --git a/.travis.yml b/.travis.yml
index 53049b61..015948a5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,7 +25,7 @@ install:
 
 # command to run the dependencies
 script:
-  - "pipenv run pytest tests -m $TEST_SUITE"
+  - "pipenv run pytest tests -m \"$TEST_SUITE\""
 
 # command to run tests
 # jobs: