diff --git a/scalac-scoverage-runtime/js/src/main/scala/scalajssupport/File.scala b/scalac-scoverage-runtime/js/src/main/scala/scalajssupport/File.scala
index 28f69d2b..23c3d1b8 100644
--- a/scalac-scoverage-runtime/js/src/main/scala/scalajssupport/File.scala
+++ b/scalac-scoverage-runtime/js/src/main/scala/scalajssupport/File.scala
@@ -69,10 +69,10 @@ object File {
 
   val jsFile: JsFileObject = if (globalObject.hasOwnProperty("Packages").asInstanceOf[Boolean])
     RhinoFile
-  else if (!globalObject.hasOwnProperty("window").asInstanceOf[Boolean])
-    NodeFile
-  else
+  else if (globalObject.hasOwnProperty("callPhantom").asInstanceOf[Boolean])
     PhantomFile
+  else
+    NodeFile
   // Factorize this
 
   def pathJoin(path: String, child: String): String =