diff -r cd266473b81b -r b5783412bfed src/Doc/Prog_Prove/document/build
--- a/src/Doc/Prog_Prove/document/build	Thu Mar 10 12:11:50 2016 +0100
+++ b/src/Doc/Prog_Prove/document/build	Thu Mar 10 17:30:04 2016 +0100
@@ -5,6 +5,6 @@
 FORMAT="$1"
 VARIANT="$2"
 
-"$ISABELLE_TOOL" logo HOL
+isabelle logo HOL
 "$ISABELLE_HOME/src/Doc/prepare_document" "$FORMAT"