diff --git a/CredentialProvider.Microsoft/CredentialProvider.Microsoft.csproj b/CredentialProvider.Microsoft/CredentialProvider.Microsoft.csproj
index b514d831..fdea1603 100644
--- a/CredentialProvider.Microsoft/CredentialProvider.Microsoft.csproj
+++ b/CredentialProvider.Microsoft/CredentialProvider.Microsoft.csproj
@@ -61,13 +61,16 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <FilesToSign Include="$(OutDir)/$(TargetFileName)">
+    <FilesToSign Include="$(OutDir)$(TargetFileName)">
       <Authenticode>Microsoft400</Authenticode>
       <StrongName>StrongName</StrongName>
     </FilesToSign>
-    <FilesToSign Include="$(IntermediateOutputPath)/$(TargetFileName)">
+    <FilesToSign Include="$(IntermediateOutputPath)$(TargetFileName)">
       <Authenticode>Microsoft400</Authenticode>
       <StrongName>StrongName</StrongName>
     </FilesToSign>
+    <FilesToSign Include="$(IntermediateOutputPath)apphost.exe" Condition=" '$(UseAppHost)' == 'true' ">
+      <Authenticode>Microsoft400</Authenticode>
+    </FilesToSign>
   </ItemGroup>
 </Project>