diff --git a/.travis.yml b/.travis.yml
index ae71f86f73..a00b143ba0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,9 +25,12 @@ script:
   - Xvfb :99 -screen 0 800x600x24 >/dev/null 2>&1 & # Need to set bit depth, otherwise get some black screenshots
   - # until xset -q; do echo "Waiting for X server to start..."; sleep 1; done # We are not immediately using it anyway
   - # Find out which files in data/ have been changed in the last commit
+  - #set -x    # Debug #379
   - FILES=$(git log -1 -p data/ | grep +++ | cut -d '/' -f 2- | sed -e 's|dev/null||g')
+  - echo "$FILES" ; if [ x"$FILES" == x ] ; then echo "Variable FILES is empty." ; fi
   - # Work on these files that have been changed in the last commit
-  - for FILE in $FILES ; do echo "$FILE" ; bash -e code/worker.sh $(readlink -f "$FILE") ; done
+  - # Check if $FILES is not empty
+  - if [ x"$FILES" != x ] ; then for FILE in $FILES ; do echo "$FILE" ; bash -e code/worker.sh $(readlink -f "$FILE") ; done ; fi
 
 after_script:
   - # xpra stop :99