diff --git a/scripts/cli b/scripts/cli
index 25dde0c8c4..c93418c5de 100644
--- a/scripts/cli
+++ b/scripts/cli
@@ -326,6 +326,7 @@ __rvm_parse_args() {
           for option in verbose xtrace errexit errtrace noclobber nounset pipefail ; do
             set -o $option
           done
+          export PS4='+(${BASH_SOURCE}:${LINENO}): ${FUNCNAME[0]:+${FUNCNAME[0]}(): }'
         ;;
       --debug)
           rvm_debug_flag=1