diff --git a/.travis.yml b/.travis.yml
index 095969336d5..15718c091af 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,7 +8,7 @@ env:
 script:
   - if [ $CC == 'clang' ];
     then make -j2 linux_x64_clang && ./$MAME -validate;
-    else make -j2 && ./$MAME -validate;
+    else make -j2 OPTIMIZE=0      && ./$MAME -validate;
     fi
 sudo: required
 before_install: