diff --git a/lib/libc/nls/C.msg b/lib/libc/nls/C.msg
index 2210df6cc463..1f71b2fc1733 100644
--- a/lib/libc/nls/C.msg
+++ b/lib/libc/nls/C.msg
@@ -191,6 +191,8 @@ $ EPROTO
 92 Protocol error
 $ ENOTCAPABLE
 93 Capabilities insufficient
+$ ECAPMODE
+94 Not permitted in capability mode
 $
 $ strsignal() support catalog
 $