diff --git a/.travis.yml b/.travis.yml
index 2c384ba..e7caab9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -38,7 +38,7 @@ install:
 before_script:
   - mkdir build
   - cd build
-  - cmake -G${GENERATOR} -DCMAKE_CXX_COMPILER=${CXX} -DCMAKE_C_COMPILER=${CC} ..
+  - cmake -G"${GENERATOR}" -DCMAKE_CXX_COMPILER=${CXX} -DCMAKE_C_COMPILER=${CC} ..
 
 script:
   - cmake --build . --config Release