diff --git a/lib/lib_debug.sh b/lib/lib_debug.sh
index 5de6aea..1601ccf 100644
--- a/lib/lib_debug.sh
+++ b/lib/lib_debug.sh
@@ -36,7 +36,7 @@ debugger() {
   } | sort >| "${VAR_DUMP_VARS_INITIAL}"
   declare -gx VAR_EARLY_DEBUG=true
   ### Set a verbose PS4 prompt including timestamp, source, line, exit status, and function name
-  declare -grx PS4='\e[97m+\e[0m\e[96m$(date +%Y-%m-%d %H:%M:%S.%4N)\e[0m\e[97m:\e[0m\e[92m[${BASH_SOURCE[0]}:${LINENO}]\e[0m\e[97m|\e[0m\e[93m${?}\e[0m\e[97m>\e[0m\e[95m${FUNCNAME[0]:-main}()\e[0m \e[97m>>\e[0m '
+  declare -grx PS4='\e[97m+\e[0m\e[96m$(date +%Y-%m-%dT%H:%M:%S.%4N)\e[0m\e[97m:\e[0m\e[92m[${BASH_SOURCE[0]}:${LINENO}]\e[0m\e[97m|\e[0m\e[93m${?}\e[0m\e[97m>\e[0m\e[95m${FUNCNAME[0]:-main}()\e[0m \e[97m>>\e[0m '
   # shellcheck disable=SC2155
   declare -grx LOG_DEBUG="/tmp/ciss_live_builder_$$_debug.log"
   ### Generates empty LOG_DEBUG