1.1 --- a/src/HOL/Proofs/Extraction/Util.thy	Tue Mar 10 16:12:35 2015 +0000
     1.2 +++ b/src/HOL/Proofs/Extraction/Util.thy	Mon Mar 16 15:30:00 2015 +0000
     1.3 @@ -5,7 +5,7 @@
     1.4  section {* Auxiliary lemmas used in program extraction examples *}
     1.5  
     1.6  theory Util
     1.7 -imports Old_Datatype
     1.8 +imports "~~/src/HOL/Library/Old_Datatype"
     1.9  begin
    1.10  
    1.11  text {*