diff --git a/core/src/main/scala/kafka/log/LogManager.scala b/core/src/main/scala/kafka/log/LogManager.scala
index bcd2bb7cb3152..8bd0428eeab94 100644
--- a/core/src/main/scala/kafka/log/LogManager.scala
+++ b/core/src/main/scala/kafka/log/LogManager.scala
@@ -338,6 +338,7 @@ class LogManager(val logDirs: Array[File],
         diff -= segment.size
         true
       } else {
+        diff = 0
         false
       }
     }