diff --git a/.travis/run-tests.sh b/.travis/run-tests.sh
index 11d98cd6a..1ba31be7e 100755
--- a/.travis/run-tests.sh
+++ b/.travis/run-tests.sh
@@ -7,8 +7,8 @@ result=0
 for tested in "${testedcomponents[@]}"
     do
         echo "$tested:"
-        phpunit -c $testdir/phpunit.xml $testdir/$tested
-        let "result = $result || $?"
+        phpunit -c $testdir/phpunit.xml --stderr $testdir/$tested
+        result=$(($result || $?))
 done
 
-exit $result
\ No newline at end of file
+exit $result