diff --git a/ASIM/dev/ASimTester/ASimTester.csv b/ASIM/dev/ASimTester/ASimTester.csv
index ef9ceb8f691..ad67f24de97 100644
--- a/ASIM/dev/ASimTester/ASimTester.csv
+++ b/ASIM/dev/ASimTester/ASimTester.csv
@@ -248,7 +248,7 @@ DstZone,string,Optional,WebSession,,,
 Duration,int,Alias,Dns,,,DnsNetworkDuration
 Duration,int,Alias,NetworkSession,,,NetworkDuration
 Duration,int,Alias,WebSession,,,NetworkDuration
-Duration,string,Alias,Dhcp,,,DhcpSessionDuration
+Duration,int,Alias,Dhcp,,,DhcpSessionDuration
 Dvc,string,Mandatory,AuditEvent,,,
 Dvc,string,Mandatory,Authentication,,,
 Dvc,string,Mandatory,Common,,,