diff --git a/sbp.bash b/sbp.bash
index 3162077..e0c7597 100644
--- a/sbp.bash
+++ b/sbp.bash
@@ -40,7 +40,7 @@ _sbp_set_prompt() {
   fi
   printf '\e]2;%s\007' "$title"
   # gitstatus.plugin.sh requires an interactive shell
-  PS1=$(bash --noediting -noprofile --norc -i "${SBP_PATH}/src/main.bash" "$command_status" "$command_duration" "$GITSTATUS_DIR" "$GITSTATUS_DAEMON_PID" "$_GITSTATUS_REQ_FD" "$_GITSTATUS_RESP_FD")
+  PS1=$(HISTFILE=/dev/null bash --noediting --noprofile --norc -i "${SBP_PATH}/src/main.bash" "$command_status" "$command_duration" "$GITSTATUS_DIR" "$GITSTATUS_DAEMON_PID" "$_GITSTATUS_REQ_FD" "$_GITSTATUS_RESP_FD")
   [[ -n "$SBP_DEBUG" ]] && debug::tick_timer "Done"
 }