diff --git a/usp-js/Makefile b/usp-js/Makefile
index fc7af98a7..4141d5911 100644
--- a/usp-js/Makefile
+++ b/usp-js/Makefile
@@ -6,14 +6,16 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=usp-js
-PKG_VERSION:=1.2.7
+PKG_VERSION:=1.2.8
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=https://dev.iopsys.eu/websdk/usp-js.git
-PKG_SOURCE_VERSION:=a4be8f6d8442d56c632514abb16f3de0817fb22f
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
+PKG_SOURCE_VERSION:=31d652f91e8581d19840a8fdde1f87b0acca44ed
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_SOURCE_VERSION).tar.gz
 PKG_MIRROR_HASH:=skip
 
+PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_SOURCE_VERSION)
+
 PKG_LICENSE:=BSD-3-Clause
 PKG_LICENSE_FILES:=LICENSE
 
@@ -32,7 +34,7 @@ define Package/usp-js/description
 endef
 
 define Build/Compile
-	cd $(PKG_BUILD_DIR) && yarn install && yarn qjs
+	cd $(PKG_BUILD_DIR) && [ -d "./qjs" ] || (yarn install && yarn qjs)
 endef
 
 define Package/usp-js/install