diff --git a/doc/sphinx/conf.py b/doc/sphinx/conf.py
index d79fc23..ed70681 100644
--- a/doc/sphinx/conf.py
+++ b/doc/sphinx/conf.py
@@ -58,7 +58,7 @@
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
-#language = None
+language = 'de'
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used:
@@ -75,7 +75,7 @@
 #default_role = None
 
 # If true, '()' will be appended to :func: etc. cross-reference text.
-#add_function_parentheses = True
+add_function_parentheses = True
 
 # If true, the current module name will be prepended to all description
 # unit titles (such as .. function::).
@@ -94,6 +94,11 @@
 # If true, keep warnings as "system message" paragraphs in the built documents.
 #keep_warnings = False
 
+# The default language to highlight source code in.
+highlight_language = 'pike'
+# A dictionary of options that modify how the lexer specified by
+# highlight_language generates highlighted source code.
+highlight_options = {'tabsize':4 }
 
 # -- Options for HTML output ----------------------------------------------