diff --git a/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGenerator.csproj b/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGenerator.csproj
index f45f50bc410b02..3ead78a18b2570 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGenerator.csproj
+++ b/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGenerator.csproj
@@ -12,6 +12,7 @@
     <!-- Disable RS2008: Enable analyzer release tracking
          Diagnostics in runtime use a different mechanism (docs/project/list-of-diagnostics.md) -->
     <NoWarn>RS2008;$(NoWarn)</NoWarn>
+    <AnalyzerLanguage>cs</AnalyzerLanguage>
 
     <!-- Packaging properties -->
     <!-- In the future LibraryImportGenerator might ship as part of a package, but meanwhile disable packaging. -->