diff --git a/src/custom_punctuation.rs b/src/custom_punctuation.rs
index 7624040436..eef5f54584 100644
--- a/src/custom_punctuation.rs
+++ b/src/custom_punctuation.rs
@@ -245,6 +245,7 @@ macro_rules! custom_punctuation_len {
     ($mode:ident, ^=)    => { 2 };
     ($mode:ident, :)     => { 1 };
     ($mode:ident, ,)     => { 1 };
+    ($mode:ident, $)     => { 1 };
     ($mode:ident, .)     => { 1 };
     ($mode:ident, ..)    => { 2 };
     ($mode:ident, ...)   => { 3 };