diff --git a/.travis.yml b/.travis.yml
index d3b9866..cb15444 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,13 +11,13 @@ env:
 matrix:
   include:
     - rust: nightly
-      env: TEST_COMMAND=build FEATURES='--no-default-features'
+      env: TEST_COMMAND=build FEATURES=--no-default-features
     - rust: nightly
-      env: TEST_COMMAND=test FEATURES='--features="nightly"'
+      env: TEST_COMMAND=test FEATURES=--features="nightly"
     - rust: nightly
-      env: TEST_COMMAND=bench FEATURES='--features="bench"'
+      env: TEST_COMMAND=bench FEATURES=--features="bench"
     - rust: nightly
-      env: TEST_COMMAND=bench FEATURES='--features="nightly bench"'
+      env: TEST_COMMAND=bench FEATURES=--features="nightly bench"
 
 script:
   - cargo $TEST_COMMAND $FEATURES