diff --git a/core/scripts/run-tests.sh b/core/scripts/run-tests.sh
index db52e6e..71f39ce 100755
--- a/core/scripts/run-tests.sh
+++ b/core/scripts/run-tests.sh
@@ -211,7 +211,7 @@ function simpletest_script_help() {
   --types
 
               Runs just tests from the specified test type, for example
-              run-tests.sh --all --types=
+              run-tests.sh --types=SimpleTest,PHPUnit-Functional
 
   --directory Run all tests found within the specified file directory.