diff --git a/profiles/CB3/package.use b/profiles/CB3/package.use
index aeece4f3..fd2b0cbe 100644
--- a/profiles/CB3/package.use
+++ b/profiles/CB3/package.use
@@ -13,8 +13,9 @@ media-video/ffmpeg nvenc
 # support for Tk GUI toolkit
 dev-lang/python tk
 
-media-libs/openimageio cpu_flags_x86_avx cpu_flags_x86_avx2 cpu_flags_x86_f16c
 media-libs/opencv cpu_flags_x86_avx cpu_flags_x86_avx2 cpu_flags_x86_fma3 cpu_flags_x86_popcnt cpu_flags_x86_sse4_1 cpu_flags_x86_sse4_2 cpu_flags_x86_ssse3
+media-libs/openimageio cpu_flags_x86_avx cpu_flags_x86_avx2 cpu_flags_x86_f16c
+www-client/firefox cpu_flags_x86_avx2
 
 # required by mail-client/geary-0.12.3
 app-crypt/libsecret vala
diff --git a/profiles/templates/3.5/6_ac_update_sync/world/grp/www-client b/profiles/templates/3.5/6_ac_update_sync/world/grp/www-client
index d8db4fea..f8c5177e 100644
--- a/profiles/templates/3.5/6_ac_update_sync/world/grp/www-client
+++ b/profiles/templates/3.5/6_ac_update_sync/world/grp/www-client
@@ -1,5 +1,9 @@
 # Calculate name=world format=world
 
+#?in(os_linux_pkglist, CB3)!=#
+firefox
+#in#
+
 #?in(os_linux_pkglist, CB4)!=#
 #-world(#-cl_pass_file-#)-#
 # already binary