diff --git a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
index 177ae15787..2db18cc461 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
@@ -534,9 +534,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
 
         for (;;) {
             if (activeCount >= maxActive) {
-                long startNano = System.nanoTime();
-                notMaxActive.awaitNanos(nanos);
-                nanos -= (System.nanoTime() - startNano);
+                nanos = notMaxActive.awaitNanos(nanos);
             }
 
             if (poolingCount == 0) {