diff --git a/scalanativelib/src/mill/scalanativelib/ScalaNativeModule.scala b/scalanativelib/src/mill/scalanativelib/ScalaNativeModule.scala
index 26c09136379..241687aa8da 100644
--- a/scalanativelib/src/mill/scalanativelib/ScalaNativeModule.scala
+++ b/scalanativelib/src/mill/scalanativelib/ScalaNativeModule.scala
@@ -356,6 +356,7 @@ trait TestScalaNativeModule extends ScalaNativeModule with TestModule {
       nativeLink().toIO,
       forkEnv() ++
         Map(
+          "MILL_TEST_RESOURCE_DIR" -> resources().map(_.path).mkString(";"),
           EnvVars.MILL_TEST_RESOURCE_FOLDER -> resources().map(_.path).mkString(";"),
           EnvVars.MILL_WORKSPACE_ROOT -> T.workspace.toString
         ),