diff --git a/.travis.yml b/.travis.yml
index 9e553f489..ff9318bb4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -50,5 +50,5 @@ after_success:
   - lcov --directory . --capture --output-file coverage.info
   - lcov --remove coverage.info '/usr/*' 'contrib/*' 'test/*' --output-file coverage.info
   - lcov --list coverage.info
-  - coveralls-lcov --repo-token=${COVERALLS_TOKEN} coverage.info
+  - coveralls-lcov --source-encoding=ISO-8859-1 --repo-token=${COVERALLS_TOKEN} coverage.info