diff --git a/dubbo-cluster/src/main/java/com/alibaba/dubbo/rpc/cluster/loadbalance/AbstractLoadBalance.java b/dubbo-cluster/src/main/java/com/alibaba/dubbo/rpc/cluster/loadbalance/AbstractLoadBalance.java
index e35167db7e1..13c15af53f4 100644
--- a/dubbo-cluster/src/main/java/com/alibaba/dubbo/rpc/cluster/loadbalance/AbstractLoadBalance.java
+++ b/dubbo-cluster/src/main/java/com/alibaba/dubbo/rpc/cluster/loadbalance/AbstractLoadBalance.java
@@ -47,7 +47,7 @@ protected int getWeight(Invoker<?> invoker, Invocation invocation) {
     		int uptime = (int) (System.currentTimeMillis() - timestamp);
     		int warmup = invoker.getUrl().getParameter(Constants.WARMUP_KEY, Constants.DEFAULT_WARMUP);
     		if (uptime > 0 && uptime < warmup) {
-    			weight = uptime / (warmup / weight);
+    			weight = (int) ( (float) uptime / ( (float) warmup / (float) weight ) );
     		}
     	}
     	return weight;