diff --git a/package/avm/vobcopy/vobcopy.desc b/package/avm/vobcopy/vobcopy.desc
index f8b09cc51..a7591ae6e 100644
--- a/package/avm/vobcopy/vobcopy.desc
+++ b/package/avm/vobcopy/vobcopy.desc
@@ -36,6 +36,7 @@
 [M] Andreas V. 'netrunner' Meier <avmeier@web.de>
 
 [C] extra/tool
+[F] CORE
 
 [L] GPL
 [S] Stable
diff --git a/package/base/netkit-rsh/netkit-rsh.desc b/package/base/netkit-rsh/netkit-rsh.desc
index fca1ab019..aafbe09d1 100644
--- a/package/base/netkit-rsh/netkit-rsh.desc
+++ b/package/base/netkit-rsh/netkit-rsh.desc
@@ -44,6 +44,7 @@
 [M] Clifford Wolf <clifford@clifford.at>
 
 [C] base/system
+[F] CORE
 
 [L] OpenSource
 [S] Stable
diff --git a/package/public/unrar/unrar.desc b/package/public/unrar/unrar.desc
index 39309104d..a5a2a4db9 100644
--- a/package/public/unrar/unrar.desc
+++ b/package/public/unrar/unrar.desc
@@ -36,6 +36,7 @@
 [M] The ROCK Linux Project
 
 [C] base/tool
+[F] CORE
 
 [L] Free-to-use
 [S] Stable
diff --git a/package/x11/xv/xv.desc b/package/x11/xv/xv.desc
index ef0d7093d..c504ce8de 100644
--- a/package/x11/xv/xv.desc
+++ b/package/x11/xv/xv.desc
@@ -33,6 +33,7 @@
 [M] The ROCK Linux Project
 
 [C] extra/multimedia
+[F] CORE
 
 [L] Commercial
 [S] Stable