diff --git a/debian/config/i386/config.486 b/debian/config/i386/config.486
index 4b62dfcb1..94e3b0722 100644
--- a/debian/config/i386/config.486
+++ b/debian/config/i386/config.486
@@ -18,6 +18,7 @@ CONFIG_OLPC_XO15_SCI=y
 ## file: arch/x86/Kconfig.cpu
 ##
 ## choice: Processor family
+#. TODO: Change to M586TSC at next ABI bump (see #766105)
 CONFIG_M486=y
 # CONFIG_M686 is not set
 ## end choice