diff --git a/plugins/ps/functions b/plugins/ps/functions
index c1757f18c..44b7648d9 100755
--- a/plugins/ps/functions
+++ b/plugins/ps/functions
@@ -36,7 +36,9 @@ extract_procfile() {
     dokku_log_info1_quiet "App Procfile file found ($DOKKU_PROCFILE)"
     # shellcheck disable=SC2069
     PROCFILE_ERRORS="$(procfile-util check --procfile  "$DOKKU_PROCFILE" 2>&1 >/dev/null || true)"
-    [[ -n "$PROCFILE_ERRORS" ]] && dokku_log_fail "${PROCFILE_ERRORS}"
+    if [[ -n "$PROCFILE_ERRORS" ]]; then
+      dokku_log_fail "${PROCFILE_ERRORS}"
+    fi
   else
     dokku_log_info1_quiet "No Procfile found in app image"
   fi