diff --git a/scripts/travis/travis_build_and_test.sh b/scripts/travis/travis_build_and_test.sh
index 2a456998916..4488dd97831 100755
--- a/scripts/travis/travis_build_and_test.sh
+++ b/scripts/travis/travis_build_and_test.sh
@@ -1,5 +1,6 @@
 #!/bin/bash
 # Script called by Travis to build and test Caffe.
+# Travis CI tests are CPU-only for lack of compatible hardware.
 
 set -e
 MAKE="make --jobs=$NUM_THREADS --keep-going"