diff --git a/src/GitVersion.MsBuild/msbuild/tools/GitVersion.MsBuild.props b/src/GitVersion.MsBuild/msbuild/tools/GitVersion.MsBuild.props
index 4f8de20607..77c681dde7 100644
--- a/src/GitVersion.MsBuild/msbuild/tools/GitVersion.MsBuild.props
+++ b/src/GitVersion.MsBuild/msbuild/tools/GitVersion.MsBuild.props
@@ -4,7 +4,7 @@
     <PropertyGroup>
         <GitVersionOutputFile>$([MSBuild]::EnsureTrailingSlash($(BaseIntermediateOutputPath)))gitversion.json</GitVersionOutputFile>
 
-        <Language Condition=" '$(Language)' == '' ">C#</Language>
+        <Language Condition=" '$(Language)' == '' Or '$(DefaultLanguageSourceExtension)' == ''">C#</Language>
         <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">$(MSBuildProjectDirectory)/../</SolutionDir>
         <GitVersionPath Condition="'$(GitVersionPath)' == '' And '$(GitVersionUseSolutionDir)' == 'true'">$(SolutionDir)</GitVersionPath>
         <GitVersionPath Condition="'$(GitVersionPath)' == ''">$(MSBuildProjectDirectory)</GitVersionPath>