diff --git a/karma.py b/karma.py
index 86bffeed0ffe53b07b2b4f650e1e4aac07e40873..75842ebea5bc61364af6d62b3731b287cc8bb584 100644
--- a/karma.py
+++ b/karma.py
@@ -1,4 +1,4 @@
-# SPDX-FileCopyrightText: 2016-2021 Bruce Cowan <bruce@bcowan.me.uk>
+# SPDX-FileCopyrightText: 2016-2022 Bruce Cowan <bruce@bcowan.me.uk>
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -30,7 +30,7 @@ class Karma(errbot.BotPlugin):
 
         return f"Karma for '{target}' is now {self['karma'][target]}"
 
-    @errbot.re_botcmd(pattern=r"(.+)\+\+", prefixed=False, flags=re.IGNORECASE)
+    @errbot.re_botcmd(pattern=r"(.+)\+\+$", prefixed=False, flags=re.IGNORECASE)
     def on_karma_inc(self, message: errbot.Message, match: re.Match) -> str | None:
         """Adds karma"""
         if message.frm == self.bot_identifier:
@@ -40,7 +40,7 @@ class Karma(errbot.BotPlugin):
 
         return self._change_karma(match.group(1), 1)
 
-    @errbot.re_botcmd(pattern=r"(.+)--", prefixed=False, flags=re.IGNORECASE)
+    @errbot.re_botcmd(pattern=r"(.+)--$", prefixed=False, flags=re.IGNORECASE)
     def on_karma_dec(self, message: errbot.Message, match: re.Match) -> str | None:
         """Removes karma"""
         if message.frm == self.bot_identifier:
diff --git a/test_karma.py b/test_karma.py
index 3fdca904da993cb62969768f9c78f1d2b39b8f12..0f4afe27e5015d5d4901b8c7e9ab65141332e355 100644
--- a/test_karma.py
+++ b/test_karma.py
@@ -1,4 +1,4 @@
-# SPDX-FileCopyrightText: 2018-2021 Bruce Cowan <bruce@bcowan.me.uk>
+# SPDX-FileCopyrightText: 2018-2022 Bruce Cowan <bruce@bcowan.me.uk>
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -40,3 +40,13 @@ def test_cpp(testbot):
     testbot.push_message("C++ is not horrible")
     with pytest.raises(queue.Empty):
         testbot.pop_message(1)
+
+
+def test_noend(testbot):
+    testbot.push_message("Testing++ not at the end of line")
+    with pytest.raises(queue.Empty):
+        testbot.pop_message(1)
+
+    testbot.push_message("Testing-- not at the end of the line")
+    with pytest.raises(queue.Empty):
+        testbot.pop_message(1)