diff --git a/makefile-templates/install.patterns b/makefile-templates/install.patterns
index da00d08..dfa65af 100644
--- a/makefile-templates/install.patterns
+++ b/makefile-templates/install.patterns
@@ -12,6 +12,8 @@
 #
 # Which documents to install on the web server.
 #
+LECTURES_INSTALL_PATTERN:='\(0[1-9]\|1[0123]\)_.*' # or whatever
+
 TUT_QUESTIONS_INSTALL_PATTERN:='tut\(0[1-9]\|1[01]\)'
 TUT_ANSWERS_INSTALL_PATTERN:='tut\(0[1-9]\|1[01]\)'