diff --git a/irctokens/protocol.py b/irctokens/protocol.py
index 12b0dbe..1f4eb3a 100644
--- a/irctokens/protocol.py
+++ b/irctokens/protocol.py
@@ -4,6 +4,8 @@ TAG_UNESCAPED = ["\\",   " ",   ";",   "\r",  "\n"]
 TAG_ESCAPED =   ["\\\\", "\\s", "\\:", "\\r", "\\n"]
 
 def _unescape_tag(value: str):
+    if value.endswith("\\") and not value.endswith("\\\\"):
+        value = value[:-1]
     parts = value.split("\\\\")
     for i, piece in enumerate(TAG_ESCAPED):
         for j, part in enumerate(parts):
diff --git a/test/tokenise.py b/test/tokenise.py
index 76cf211..851fa25 100644
--- a/test/tokenise.py
+++ b/test/tokenise.py
@@ -22,6 +22,10 @@ class TokenTestTags(unittest.TestCase):
         line = irctokens.tokenise(r"@id=1\\\s\\s PRIVMSG #channel")
         self.assertEqual(line.tags["id"], "1\\ \\s")
 
+    def test_lone_end_slash(self):
+        line = irctokens.tokenise("@id=1\\ PRIVMSG #channel")
+        self.assertEqual(line.tags["id"], "1")
+
 class TokenTestSource(unittest.TestCase):
     def test_without_tags(self):
         line = irctokens.tokenise(":nick!user@host PRIVMSG #channel")