diff --git a/test/groovy/PiperTestBase.groovy b/test/groovy/PiperTestBase.groovy
index 41a6ff326..91dd79549 100644
--- a/test/groovy/PiperTestBase.groovy
+++ b/test/groovy/PiperTestBase.groovy
@@ -34,7 +34,7 @@ public class PiperTestBase extends BasePipelineTest {
 
     protected withPipeline(p) {
         pipeline << p()
-        loadScript(pipeline.getAbsolutePath())
+        loadScript(pipeline.toURI().getPath())
     }
 
     private preparePiperLib() {