diff -ru openvas-scanner-4.0.1/CMakeLists.txt openvas-scanner-4.0.1.rules/CMakeLists.txt
--- openvas-scanner-4.0.1/CMakeLists.txt	2014-04-23 16:00:47.000000000 +0200
+++ openvas-scanner-4.0.1.rules/CMakeLists.txt	2014-05-26 16:07:37.454116277 +0200
@@ -171,6 +171,10 @@
 set (OPENVASSD_DEBUGMSG "${OPENVAS_LOG_DIR}/openvassd.dump")
 set (OPENVASSD_CONF     "${OPENVAS_SYSCONF_DIR}/openvassd.conf")
 
+if (NOT OPENVASSD_RULES)
+  set (OPENVASSD_RULES    "${OPENVAS_DATA_DIR}/openvassd.rules")
+endif (NOT OPENVASSD_RULES)
+
 set (NVT_TIMEOUT "320")
 
 message ("-- Install prefix: ${CMAKE_INSTALL_PREFIX}")