1 files changed, 4 insertions, 2 deletions
diff --git a/Doc/texinputs/howto.cls b/Doc/texinputs/howto.cls
index 936e1fa..c9beb4a 100644
--- a/Doc/texinputs/howto.cls
+++ b/Doc/texinputs/howto.cls
@@ -50,7 +50,8 @@
 %
 \renewcommand{\maketitle}{
   \py@doHorizontalRule
-  \@ifundefined{pdfinfo}{}{{
+  \ifpdf
+    \begingroup
     % This \def is required to deal with multi-line authors; it
     % changes \\ to ', ' (comma-space), making it pass muster for
     % generating document info in the PDF file.
@@ -59,7 +60,8 @@
       /Author (\@author)
       /Title (\@title)
     }
-  }}
+    \endgroup
+  \fi
   \begin{flushright}
     {\rm\Huge\py@HeaderFamily \@title} \par
     {\em\large\py@HeaderFamily \py@release\releaseinfo} \par