diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/util/PoolMap.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/util/PoolMap.java
index b683fcc9e4e..f89215b1ae8 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/util/PoolMap.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/util/PoolMap.java
@@ -360,7 +360,7 @@ public class PoolMap<K, V> implements Map<K, V> {
 
     @Override
     public R get() {
-      if (super.size() < maxSize) {
+      if (super.size() <= 0) {
         return null;
       }
       nextResource %= super.size();