diff --git a/kitty/key_encoding.c b/kitty/key_encoding.c
index 9b3276a3a..52c01d7eb 100644
--- a/kitty/key_encoding.c
+++ b/kitty/key_encoding.c
@@ -303,6 +303,7 @@ is_legacy_ascii_key(uint32_t key) {
         case ']':
         case '\\':
         case ';':
+        case ':':
         case '\'':
         case ',':
         case '.':