diff --git a/modules/core/src/main/java/org/apache/ignite/spi/communication/tcp/internal/ConnectionClientPool.java b/modules/core/src/main/java/org/apache/ignite/spi/communication/tcp/internal/ConnectionClientPool.java
index 6be1c684fc721..55824fea77558 100644
--- a/modules/core/src/main/java/org/apache/ignite/spi/communication/tcp/internal/ConnectionClientPool.java
+++ b/modules/core/src/main/java/org/apache/ignite/spi/communication/tcp/internal/ConnectionClientPool.java
@@ -859,7 +859,7 @@ private long averageConnectionLifeTime() {
                 totalLifetime += (now - client.creationTime());
             }
 
-            return totalLifetime / connCnt;
+            return connCnt != 0 ? totalLifetime / connCnt : 0;
         }
 
         /** */