diff --git a/cluster/router/healthcheck/default_health_check.go b/cluster/router/healthcheck/default_health_check.go
index c693b86ecdab7b32936185fe4bd614bd0f83fbeb..c522bdf0f98244f5f8bdfba6085cb45dd89c1004 100644
--- a/cluster/router/healthcheck/default_health_check.go
+++ b/cluster/router/healthcheck/default_health_check.go
@@ -31,7 +31,7 @@ import (
 )
 
 func init() {
-	extension.SethealthChecker(constant.DEFAULT_HEALTH_CHECKER, NewDefaultHealthChecker)
+	extension.SetHealthChecker(constant.DEFAULT_HEALTH_CHECKER, NewDefaultHealthChecker)
 }
 
 // DefaultHealthChecker is the default implementation of HealthChecker, which determines the health status of
@@ -85,7 +85,7 @@ func (c *DefaultHealthChecker) getCircuitBreakerSleepWindowTime(status *protocol
 	} else if diff > constant.DEFAULT_SUCCESSIVE_FAILED_REQUEST_MAX_DIFF {
 		diff = constant.DEFAULT_SUCCESSIVE_FAILED_REQUEST_MAX_DIFF
 	}
-	sleepWindow := (1 << diff) * c.GetCircuitTrippedTimeoutFactor()
+	sleepWindow := (1 << uint(diff)) * c.GetCircuitTrippedTimeoutFactor()
 	if sleepWindow > constant.MAX_CIRCUIT_TRIPPED_TIMEOUT_IN_MS {
 		sleepWindow = constant.MAX_CIRCUIT_TRIPPED_TIMEOUT_IN_MS
 	}