src/HOL/NSA/Filter.thy

--- a/src/HOL/NSA/Filter.thy	Thu Jan 16 16:20:17 2014 +0100
+++ b/src/HOL/NSA/Filter.thy	Thu Jan 16 16:33:19 2014 +0100
@@ -7,7 +7,7 @@
 header {* Filters and Ultrafilters *}
 
 theory Filter
-imports "~~/src/HOL/Library/Zorn" "~~/src/HOL/Library/Infinite_Set"
+imports "~~/src/HOL/Library/Infinite_Set"
 begin
 
 subsection {* Definitions and basic properties *}