diff --git a/obuspa/Makefile b/obuspa/Makefile
index 0435be582..c689a43a9 100644
--- a/obuspa/Makefile
+++ b/obuspa/Makefile
@@ -5,13 +5,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=obuspa
-PKG_VERSION:=9.0.4.3
+PKG_VERSION:=9.0.4.4
 
 LOCAL_DEV:=0
 ifneq ($(LOCAL_DEV),1)
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=https://dev.iopsys.eu/bbf/obuspa.git
-PKG_SOURCE_VERSION:=ccba361190e42000da16380591df80e5e5225d68
+PKG_SOURCE_VERSION:=1e5638d104075741a62d777ea9a2c508740c3634
 PKG_MAINTAINER:=Vivek Dutta <vivek.dutta@iopsys.eu>
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
 PKG_MIRROR_HASH:=skip
@@ -103,7 +103,7 @@ ifeq ($(CONFIG_OBUSPA_SESSION_EXTENSION),y)
 TARGET_CFLAGS += -DOBUSPA_ENABLE_SESSION_EXT
 endif
 
-ifdef $(CONFIG_OBUSPA_MAX_CONTROLLERS_NUM)
+ifneq ($(CONFIG_OBUSPA_MAX_CONTROLLERS_NUM),)
 TARGET_CFLAGS += -DOBUSPA_MAX_CONTROLLERS_NUM=$(CONFIG_OBUSPA_MAX_CONTROLLERS_NUM)
 endif