diff --git a/.travis.yml b/.travis.yml
index 8bcd8da..f14bcda 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -42,7 +42,7 @@ install:
   - source ~/.cargo/env || true
 
 script:
-  - if [ "$TRAVIS_RUST_VERSION" == "nightly" ]; then
+  - if [ "$TRAVIS_RUST_VERSION" = "nightly" ]; then
       rustup component add rustfmt-preview
     else
       rustup component add rustfmt