diff --git a/.travis.yml b/.travis.yml
index e9faef6..df63b69 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@ python:
 env:
   global:
     - COVERAGE_CMD="coverage run -m"
-    - COVERAGE_DEP=coverage
+    - COVERAGE_DEP="coverage"
 install:
   - pip install tox coveralls
 script: