diff --git a/README.asciidoc b/README.asciidoc
index 811f0a76..3a7fe8fb 100644
--- a/README.asciidoc
+++ b/README.asciidoc
@@ -787,6 +787,7 @@ attributes is a string of letters each defining an attributes:
  * `B`: Blink
  * `d`: Dim
  * `i`: Italic
+ * `e`: Exclusive, override previous faces instead of merging with them
 
 Using named faces instead of facespec permits to change the effective faces
 afterwards.
diff --git a/src/commands.cc b/src/commands.cc
index f4627bc6..6084f1f4 100644
--- a/src/commands.cc
+++ b/src/commands.cc
@@ -1543,7 +1543,7 @@ const CommandDesc face_cmd = {
     "facespec format is <fg color>[,<bg color>][+<attributes>]\n"
     "colors are either a color name, or rgb:###### values.\n"
     "attributes is a combination of:\n"
-    "    u: underline, r: reverse, b: bold, B: blink, d: dim\n"
+    "    u: underline, r: reverse, b: bold, B: blink, d: dim, e: exclusive\n"
     "facespec can as well just be the name of another face" ,
     ParameterDesc{{}, ParameterDesc::Flags::None, 2, 2},
     CommandFlags::None,