diff --git a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
index 1d899262a6..8704eb311c 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
@@ -106,6 +106,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
             destroyCount = 0;
             removeAbandonedCount = 0;
             notEmptyWaitCount = 0;
+            notEmptySignalCount = 0L;
             notEmptyWaitNanos = 0;
         } finally {
             lock.unlock();