diff --git a/.travis.yml b/.travis.yml
index 0c173082d5d039f902b897b827cd67cada5ec2e9..8aaa0080ebebe2ebc1ea520e0331374d299a3c82 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,6 +31,6 @@ script:
   - scons bindings=$BINDINGS
 after_script:
   - scons test
-  - if [ "$BINDINGS" == "php" ]; then phpunit -v src/bindings/php/Tests; fi
+  - if [ "$BINDINGS" == "php" ]; then phpunit --include-path build/opt/src/bindings/php -v src/bindings/php/Tests; fi
 notifications:
   irc: "irc.upstandinghackers.com#hammer"