diff --git a/build.cmd b/build.cmd
index 95b049cf63..ee9be97a59 100644
--- a/build.cmd
+++ b/build.cmd
@@ -4,6 +4,8 @@ SETLOCAL
 SET REPO_FOLDER=%~dp0
 CD "%REPO_FOLDER%"
 
+SET NO_PARALLEL_TEST_PROJECTS=Microsoft.AspNetCore.Localization.FunctionalTests
+
 SET BUILD_FOLDER=.build
 SET KOREBUILD_FOLDER=%BUILD_FOLDER%\KoreBuild-dotnet
 SET KOREBUILD_VERSION=
diff --git a/build.sh b/build.sh
index 263fb667a8..69cf86532f 100755
--- a/build.sh
+++ b/build.sh
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+export NO_PARALLEL_TEST_PROJECTS=Microsoft.AspNetCore.Localization.FunctionalTests
+
 buildFolder=.build
 koreBuildFolder=$buildFolder/KoreBuild-dotnet