diff --git a/plugins/ps/functions b/plugins/ps/functions
index 3470a89c622..8599fc04e96 100755
--- a/plugins/ps/functions
+++ b/plugins/ps/functions
@@ -14,7 +14,7 @@ print_dokku_scale_file() {
 extract_procfile() {
   declare desc="extracts procfile from app image"
   local APP="$1"
-  local IMAGE_TAG="$(get_running_image_tag "$APP")"
+  local IMAGE_TAG="$2"
   local IMAGE="$(get_app_image_name "$APP" "$IMAGE_TAG")"
   local DOKKU_PROCFILE="$DOKKU_ROOT/$APP/DOKKU_PROCFILE"
   verify_app_name "$APP"
diff --git a/plugins/ps/pre-deploy b/plugins/ps/pre-deploy
index 92112d8ec2a..ef8c1251f4e 100755
--- a/plugins/ps/pre-deploy
+++ b/plugins/ps/pre-deploy
@@ -6,10 +6,10 @@ source "$PLUGIN_AVAILABLE_PATH/ps/functions"
 ps_pre_deploy() {
   declare desc="ps pre-deploy plugin trigger"
   local trigger="ps_pre_deploy"
-  local APP="$1"
+  local APP="$1"; local IMAGE_TAG="$2"
 
-  extract_procfile "$APP"
-  generate_scale_file "$APP"
+  extract_procfile "$APP" "$IMAGE_TAG"
+  generate_scale_file "$APP" "$IMAGE_TAG"
 }
 
 ps_pre_deploy "$@"