diff --git a/kombu/clocks.py b/kombu/clocks.py
index 612ddb49..a9862382 100644
--- a/kombu/clocks.py
+++ b/kombu/clocks.py
@@ -107,8 +107,8 @@ class LamportClock(object):
 
     def adjust(self, other):
         with self.mutex:
-            self.value = max(self.value, other) + 1
-            return self.value
+            value = self.value = max(self.value, other) + 1
+            return value
 
     def forward(self):
         with self.mutex: