diff --git a/eng/Signing.props b/eng/Signing.props
index 5283cf89fe..ef2419bcf3 100644
--- a/eng/Signing.props
+++ b/eng/Signing.props
@@ -7,7 +7,6 @@
     <FileExtensionSignInfo Update="@(FileExtensionSignInfo)" CertificateName="3PartySHA2" />
     <FileExtensionSignInfo Update=".nupkg" CertificateName="NuGet" />
     <FileExtensionSignInfo Update=".zip" CertificateName="None" />
-    <FileExtensionSignInfo Include=".cat" CertificateName="3PartySHA2" />
     <FileExtensionSignInfo Include=".msi" CertificateName="MicrosoftDotNet500" />
     <FileExtensionSignInfo Include=".pyd" CertificateName="3PartySHA2" />