--- a/src/Doc/Implementation/document/root.tex	Mon May 17 23:38:16 2021 +0200
+++ b/src/Doc/Implementation/document/root.tex	Tue May 18 15:17:55 2021 +0200
@@ -16,7 +16,7 @@
 \hyphenation{Isar}
 
 \isadroptag{theory}
-\title{\includegraphics[scale=0.5]{isabelle_isar}
+\title{\includegraphics[scale=0.5]{isabelle_logo}
   \\[4ex] The Isabelle/Isar Implementation}
 \author{\emph{Makarius Wenzel}  \\[3ex]
   With Contributions by