diff --git a/manual/source/conf.py b/manual/source/conf.py
index 175c8bca9d..4cc8c50f9e 100755
--- a/manual/source/conf.py
+++ b/manual/source/conf.py
@@ -217,13 +217,15 @@
 #latex_show_urls = False
 
 # Additional stuff for the LaTeX preamble.
-latex_elements['preamble'] = '''
+latex_elements = {
+    'preamble':     '''
 % 2012-09-25,PRJ: #240  temporary diagnostic
 \\listfiles
 % when done, remove referencing from index.rst and cp from Makefile: latexpdf
 \usepackage{enumitem}
 \setlistdepth{9}
 '''
+}
 
 # Documents to append as an appendix to all manuals.
 #latex_appendices = []