diff --git a/apparmor.d/tunables/multiarch.d/system b/apparmor.d/tunables/multiarch.d/system
index 359d1b878..0eae0fde3 100644
--- a/apparmor.d/tunables/multiarch.d/system
+++ b/apparmor.d/tunables/multiarch.d/system
@@ -20,6 +20,7 @@
 @{lib}=/{,usr/}lib{,exec,32,64}
 
 # Common places for temporary files
+# /tmp/user/@{uid}/ is needed when using .... (default on Debian)
 @{tmp}=/tmp/ /tmp/user/@{uid}/
 
 # Common places for EFI
@@ -29,7 +30,7 @@
 # ----------------
 
 # Common architecture names
-@{arch}=x86_64 amd64 i386 i686
+@{arch}=x86_64 x64 amd64 i386 i686
 
 # Dbus unique name
 @{busname}=:1.@{u16} :not.active.yet