diff --git a/utils/open2300/Makefile b/utils/open2300/Makefile
index ac06decb0..289cd3302 100644
--- a/utils/open2300/Makefile
+++ b/utils/open2300/Makefile
@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=open2300
 PKG_VERSION:=1.12
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE_PROTO:=svn
 PKG_SOURCE_URL:=http://www.lavrsen.dk/svn/open2300/trunk
@@ -33,6 +33,9 @@ define Package/open2300/description
   This is an utility suite used to communicate with and collect data from a WS23XX wheather station.
 endef
 
+MAKE_FLAGS += \
+	CFLAGS="$(TARGET_CFLAGS) -DVERSION=\"$(PKG_VERSION)\""
+
 define Package/open2300/install
 	$(INSTALL_DIR) $(1)/usr/bin
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/bin2300		$(1)/usr/bin/