diff --git a/.travis.yml b/.travis.yml
index 24c7667..fcb5e4c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,8 @@
 - ( cd tests && ./compat.sh )
 - ( cd tests && ./ssl-opt.sh )
 - tests/scripts/test-ref-configs.pl
+after_failure:
+- tests/scripts/travis-log.sh
 env:
   global:
     secure: "barHldniAfXyoWOD/vcO+E6/Xm4fmcaUoC9BeKW+LwsHqlDMLvugaJnmLXkSpkbYhVL61Hzf3bo0KPJn88AFc5Rkf8oYHPjH4adMnVXkf3B9ghHCgznqHsAH3choo6tnPxaFgOwOYmLGb382nQxfE5lUdvnM/W/psQjWt66A1+k="
diff --git a/tests/scripts/travis-log.sh b/tests/scripts/travis-log.sh
new file mode 100755
index 0000000..fead2c1
--- /dev/null
+++ b/tests/scripts/travis-log.sh
@@ -0,0 +1,27 @@
+#!/bin/sh
+
+# List the server and client logs on failed ssl-opt.sh and compat.sh tests.
+# This script is used to make the logs show up in the Travis test results.
+
+# Some of the logs can be very long: this means usually a couple of megabytes
+# but it can bee much more. For example, the client log of test 273 in ssl-opt.sh
+# is more than 630 Megabytes long.
+
+if [ -d include/mbedtls ]; then :; else
+    echo "$0: must be run from root" >&2
+    exit 1
+fi
+
+FILES="o-srv-*.log o-cli-*.log c-srv-*.log c-cli-*.log o-pxy-*.log"
+
+for PATTERN in $FILES; do
+    for LOG in $( ls tests/$PATTERN 2>/dev/null ); do
+        echo
+        echo "****** BEGIN file: $LOG ******"
+        echo
+        cat $LOG
+        echo "****** END file: $LOG ******"
+        echo
+        rm $LOG
+    done
+done