diff --git a/os/test/src/OpTests.scala b/os/test/src/OpTests.scala
index 433d960..132ecbe 100644
--- a/os/test/src/OpTests.scala
+++ b/os/test/src/OpTests.scala
@@ -10,7 +10,7 @@ import java.nio.charset.Charset
 object OpTests extends TestSuite {
 
   val tests = Tests {
-    val res = os.pwd / "os/test/resources/test"
+    val res = os.Path(sys.env("OS_TEST_RESOURCE_FOLDER")) / "test"
     test("ls") - assert(
       os.list(res).toSet == Set(
         res / "folder1",