diff --git a/.travis.yml b/.travis.yml
index a21eb0be1cba34fb7523046fb2f3e70b503002cd..1c034911def77777a891bd4c506306e098a0513e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -38,9 +38,9 @@ install:
 
 script:
   - moodle-plugin-ci phplint
-  - moodle-plugin-ci phpcpd || true
+  - moodle-plugin-ci phpcpd || true # Output warnings but do not fail the build because of working legacy code
   - moodle-plugin-ci phpmd
-  - moodle-plugin-ci codechecker || true
+  - moodle-plugin-ci codechecker || true # Output warnings but do not fail the build because of working legacy code
   - moodle-plugin-ci validate
   - moodle-plugin-ci savepoints
   - moodle-plugin-ci mustache