diff -r 7e93a10b21f0 -r 41b5e515c238 src/Pure/PIDE/document.scala
--- a/src/Pure/PIDE/document.scala	Thu Sep 12 15:32:45 2019 +0100
+++ b/src/Pure/PIDE/document.scala	Thu Sep 12 16:52:04 2019 +0200
@@ -111,9 +111,8 @@
 
       type Graph[A] = isabelle.Graph[Node.Name, A]
 
-      def make_graph[A](
-          entries: List[((Name, A), List[Name])], permissive: Boolean = false): Graph[A] =
-        Graph.make(entries, symmetric = true, permissive = permissive)(Ordering)
+      def make_graph[A](entries: List[((Name, A), List[Name])]): Graph[A] =
+        Graph.make(entries, symmetric = true)(Ordering)
     }
 
     sealed case class Name(node: String, master_dir: String = "", theory: String = "")