diff --git a/eng/common/TestResources/New-TestResources.ps1 b/eng/common/TestResources/New-TestResources.ps1
index f4f3be8de..d494ed1b9 100644
--- a/eng/common/TestResources/New-TestResources.ps1
+++ b/eng/common/TestResources/New-TestResources.ps1
@@ -53,7 +53,7 @@ param (
     [string] $ProvisionerApplicationSecret,
 
     [Parameter()]
-    [ValidateRange(1, [int]::MaxValue)]
+    [ValidateRange(1, 7*24)]
     [int] $DeleteAfterHours = 120,
 
     [Parameter()]
diff --git a/eng/common/TestResources/Update-TestResources.ps1 b/eng/common/TestResources/Update-TestResources.ps1
index 7a24c6594..a409596ff 100644
--- a/eng/common/TestResources/Update-TestResources.ps1
+++ b/eng/common/TestResources/Update-TestResources.ps1
@@ -26,7 +26,7 @@ param (
     [string] $SubscriptionId,
 
     [Parameter()]
-    [ValidateRange(1, [int]::MaxValue)]
+    [ValidateRange(1, 7*24)]
     [int] $DeleteAfterHours = 48
 )