diff --git a/src/Compilers/Core/Portable/Microsoft.CodeAnalysis.csproj b/src/Compilers/Core/Portable/Microsoft.CodeAnalysis.csproj
index 1c8bac488185..6868349e162f 100644
--- a/src/Compilers/Core/Portable/Microsoft.CodeAnalysis.csproj
+++ b/src/Compilers/Core/Portable/Microsoft.CodeAnalysis.csproj
@@ -34,7 +34,7 @@
     <PackageReference Include="System.Collections.Immutable" />
     <PackageReference Include="System.Memory" Condition="'$(TargetFramework)' == 'netstandard2.0'" />
     <PackageReference Include="System.Reflection.Metadata" />
-    <PackageReference Include="System.Runtime.CompilerServices.Unsafe" />
+    <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Condition="'$(TargetFrameworkIdentifier)' != '.NETCoreApp'" />
     <PackageReference Include="System.Threading.Tasks.Extensions" Condition="'$(TargetFramework)' == 'netstandard2.0'" />
     <PackageReference Include="System.Text.Encoding.CodePages" Condition="'$(TargetFramework)' == 'netstandard2.0'" />
   </ItemGroup>