diff --git a/plugins/scheduler-docker-local/scheduler-run b/plugins/scheduler-docker-local/scheduler-run
index 78d062cfc..b274e7d59 100755
--- a/plugins/scheduler-docker-local/scheduler-run
+++ b/plugins/scheduler-docker-local/scheduler-run
@@ -67,12 +67,14 @@ trigger-scheduler-docker-local-scheduler-run() {
   [[ "$IMAGE_SOURCE_TYPE" == "herokuish" ]] && local EXEC_CMD="/exec"
   is_image_cnb_based "$IMAGE" && EXEC_CMD=""
 
-  POTENTIAL_PROCFILE_KEY="$1"
-  PROC_CMD=$(plugn trigger procfile-get-command "$APP" "$POTENTIAL_PROCFILE_KEY" "5000" 2>/dev/null || echo '')
+  local POTENTIAL_PROCFILE_KEY="$1"
+  if [[ -n "$POTENTIAL_PROCFILE_KEY" ]]; then
+    PROC_CMD=$(plugn trigger procfile-get-command "$APP" "$POTENTIAL_PROCFILE_KEY" "5000" 2>/dev/null || echo '')
 
-  if [[ -n "$PROC_CMD" ]]; then
-    dokku_log_info1_quiet "Found '$POTENTIAL_PROCFILE_KEY' in Procfile, running that command"
-    set -- "$PROC_CMD" "${@:2}"
+    if [[ -n "$PROC_CMD" ]]; then
+      dokku_log_info1_quiet "Found '$POTENTIAL_PROCFILE_KEY' in Procfile, running that command"
+      set -- "$PROC_CMD" "${@:2}"
+    fi
   fi
 
   # shellcheck disable=SC2124