diff -r 450cefec7c11 -r cc19f7ca2ed6 src/HOL/Algebra/Congruence.thy
--- a/src/HOL/Algebra/Congruence.thy	Fri Aug 18 13:55:05 2017 +0200
+++ b/src/HOL/Algebra/Congruence.thy	Fri Aug 18 20:47:47 2017 +0200
@@ -6,7 +6,7 @@
 theory Congruence
 imports 
   Main
-  "~~/src/HOL/Library/FuncSet"
+  "HOL-Library.FuncSet"
 begin
 
 section \<open>Objects\<close>