diff --git a/make/rules.mk b/make/rules.mk
index 2e61f95b..ca8e0e86 100644
--- a/make/rules.mk
+++ b/make/rules.mk
@@ -279,7 +279,7 @@ check_not_empty_$(1):
 	fi
 endef
 
-INSTALLATION_FILE_TYPES = LIB PI HDR EXE SCRIPT INIT DOC PROFILE MAKE CFG \
+INSTALLATION_FILE_TYPES += LIB PI HDR EXE SCRIPT INIT DOC PROFILE MAKE CFG \
 	SYSCFG IMG LOG JAVA LD_CONF CGI LOGROT RSYSLOG CRONTAB
 
 #$(foreach attr,OWNER GROUP MODE,$(foreach type, $(INSTALLATION_FILE_TYPES),\