diff --git a/PowerFGT/Public/cmdb/system/global.ps1 b/PowerFGT/Public/cmdb/system/global.ps1
index 38fcf5288..03b083268 100644
--- a/PowerFGT/Public/cmdb/system/global.ps1
+++ b/PowerFGT/Public/cmdb/system/global.ps1
@@ -131,7 +131,7 @@ function Set-FGTSystemGlobal {
     [CmdletBinding(SupportsShouldProcess, ConfirmImpact = 'medium')]
     Param(
         [Parameter (Mandatory = $false)]
-        [ValidateRange("1", "480")]
+        [ValidateRange(1, 480)]
         [int]$admintimeout,
         [Parameter (Mandatory = $false)]
         [ValidateRange(1, 65535)]
diff --git a/Tests/integration/SystemGlobal.Tests.ps1 b/Tests/integration/SystemGlobal.Tests.ps1
index 64c20abc0..726a6aec2 100644
--- a/Tests/integration/SystemGlobal.Tests.ps1
+++ b/Tests/integration/SystemGlobal.Tests.ps1
@@ -53,10 +53,10 @@ Describe "Set System Global" {
         $script:settings = Get-FGTSystemGlobal
     }
 
-    It "Change admintimeout to 480" {
-        Set-FGTSystemGlobal -admintimeout 480
+    It "Change admintimeout to 60" {
+        Set-FGTSystemGlobal -admintimeout 60
         $sg = Get-FGTSystemGlobal
-        $sg.'admintimeout' | Should -Be "480"
+        $sg.'admintimeout' | Should -Be "60"
     }
 
     It "Change admin_port (HTTP)" -Skip:($httpOnly -or $ci) {