diff --git a/install.sh b/install.sh
index 64e2c4a1c3..97753b3fad 100644
--- a/install.sh
+++ b/install.sh
@@ -187,7 +187,7 @@ masterTaskCommitRetryTimes="5"
 masterTaskCommitInterval="100"
 
 # master最大cpu平均负载,用来判断master是否还有执行能力
-masterMaxCupLoadAvg="10"
+masterMaxCpuLoadAvg="10"
 
 # master预留内存,用来判断master是否还有执行能力
 masterReservedMemory="1"
@@ -272,7 +272,7 @@ sed -i ${txt} "s#master.exec.task.number.*#master.exec.task.number=${masterExecT
 sed -i ${txt} "s#master.heartbeat.interval.*#master.heartbeat.interval=${masterHeartbeatInterval}#g" conf/master.properties
 sed -i ${txt} "s#master.task.commit.retryTimes.*#master.task.commit.retryTimes=${masterTaskCommitRetryTimes}#g" conf/master.properties
 sed -i ${txt} "s#master.task.commit.interval.*#master.task.commit.interval=${masterTaskCommitInterval}#g" conf/master.properties
-sed -i ${txt} "s#master.max.cpuload.avg.*#master.max.cpuload.avg=${masterMaxCupLoadAvg}#g" conf/master.properties
+sed -i ${txt} "s#master.max.cpuload.avg.*#master.max.cpuload.avg=${masterMaxCpuLoadAvg}#g" conf/master.properties
 sed -i ${txt} "s#master.reserved.memory.*#master.reserved.memory=${masterReservedMemory}#g" conf/master.properties