diff --git a/.travis.yml b/.travis.yml
index ea2b78b124..acebdd7b26 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -214,6 +214,8 @@ jobs:
         - make ${MAKEOPTS} -C ports/unix deplibs
         - make ${MAKEOPTS} -C ports/unix
         - make ${MAKEOPTS} -C ports/unix test
+      after_failure:
+        - (cd tests && for exp in *.exp; do testbase=$(basename $exp .exp); echo -e "\nFAILURE $testbase"; diff -u $testbase.exp $testbase.out; done)
 
     # windows port via mingw
     - stage: test