diff --git a/ChangeLog b/ChangeLog
index 785eb3b..48e9fc0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2018-01-14  Ben Elliston  <bje@gnu.org>
+
+	* config.sub (maybe_os): Remove first and duplicate -none*
+	case. This is matched further down. Found by Shellcheck.
+
 2018-01-13  Ben Elliston  <bje@gnu.org>
 
 	* config.sub (maybe_os): Remove duplicate case for z8k.
diff --git a/config.sub b/config.sub
index 622d9ea..8a81a07 100755
--- a/config.sub
+++ b/config.sub
@@ -1405,7 +1405,7 @@ case $os in
 	-nto*)
 		os=`echo $os | sed -e 's|nto|nto-qnx|'`
 		;;
-	-sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \
+	-sim | -es1800* | -hms* | -xray | -os68k* | -v88r* \
 	      | -windows* | -osx | -abug | -netware* | -os9* | -beos* | -haiku* \
 	      | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*)
 		;;