diff --git a/.travis.yml b/.travis.yml
index 24b5b5eb..a2c1dc60 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -44,7 +44,7 @@ install:
     fi
 
 script:
-  - if [[ "$QT_BASE" = "510" && "$TRAVIS_OS_NAME" = "linux" ]]; then /opt/qt510/bin/qt510-env.sh; fi
+  - if [[ "$QT_BASE" = "510" && "$TRAVIS_OS_NAME" = "linux" ]]; then source /opt/qt510/bin/qt510-env.sh; fi
   - qmake PREFIX=/usr -v
   - qmake PREFIX=/usr -r
   - make -j4