diff --git a/DeterministicBuild.targets b/DeterministicBuild.targets
index 7805293..13208d1 100644
--- a/DeterministicBuild.targets
+++ b/DeterministicBuild.targets
@@ -9,7 +9,7 @@ https://github.com/dotnet/sourcelink/issues/572 -->
     <EmbeddedFiles Include="$(GeneratedAssemblyInfoFile)"/>
   </ItemGroup>
   <ItemGroup>
-    <SourceRoot Include="$(NuGetPackageRoot)" />
+    <SourceRoot Include="$([MSBuild]::EnsureTrailingSlash($(NuGetPackageRoot)))" Condition="'$(NuGetPackageRoot)' != ''" />
   </ItemGroup>
 
   <Target Name="CoverletGetPathMap"
diff --git a/Documentation/DeterministicBuild.md b/Documentation/DeterministicBuild.md
index a48865c..aa984e2 100644
--- a/Documentation/DeterministicBuild.md
+++ b/Documentation/DeterministicBuild.md
@@ -47,7 +47,7 @@ https://github.com/dotnet/sourcelink/issues/572 -->
     <EmbeddedFiles Include="$(GeneratedAssemblyInfoFile)"/>
   </ItemGroup>
   <ItemGroup>
-    <SourceRoot Include="$(NuGetPackageRoot)" />
+    <SourceRoot Include="$([MSBuild]::EnsureTrailingSlash($(NuGetPackageRoot)))" Condition="'$(NuGetPackageRoot)' != ''" />
   </ItemGroup>
 
   <Target Name="CoverletGetPathMap"
diff --git a/Documentation/Examples/MSBuild/DeterministicBuild/DeterministicBuild.targets b/Documentation/Examples/MSBuild/DeterministicBuild/DeterministicBuild.targets
index 7805293..13208d1 100644
--- a/Documentation/Examples/MSBuild/DeterministicBuild/DeterministicBuild.targets
+++ b/Documentation/Examples/MSBuild/DeterministicBuild/DeterministicBuild.targets
@@ -9,7 +9,7 @@ https://github.com/dotnet/sourcelink/issues/572 -->
     <EmbeddedFiles Include="$(GeneratedAssemblyInfoFile)"/>
   </ItemGroup>
   <ItemGroup>
-    <SourceRoot Include="$(NuGetPackageRoot)" />
+    <SourceRoot Include="$([MSBuild]::EnsureTrailingSlash($(NuGetPackageRoot)))" Condition="'$(NuGetPackageRoot)' != ''" />
   </ItemGroup>
 
   <Target Name="CoverletGetPathMap"
diff --git a/Documentation/Examples/VSTest/DeterministicBuild/DeterministicBuild.targets b/Documentation/Examples/VSTest/DeterministicBuild/DeterministicBuild.targets
index 7805293..13208d1 100644
--- a/Documentation/Examples/VSTest/DeterministicBuild/DeterministicBuild.targets
+++ b/Documentation/Examples/VSTest/DeterministicBuild/DeterministicBuild.targets
@@ -9,7 +9,7 @@ https://github.com/dotnet/sourcelink/issues/572 -->
     <EmbeddedFiles Include="$(GeneratedAssemblyInfoFile)"/>
   </ItemGroup>
   <ItemGroup>
-    <SourceRoot Include="$(NuGetPackageRoot)" />
+    <SourceRoot Include="$([MSBuild]::EnsureTrailingSlash($(NuGetPackageRoot)))" Condition="'$(NuGetPackageRoot)' != ''" />
   </ItemGroup>
 
   <Target Name="CoverletGetPathMap"