diff --git a/autogen.sh b/autogen.sh
index 930ec52616..878901855c 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -16,7 +16,7 @@ done
 
 if test ! -f doc/wiki/Authentication.txt; then
   cd doc
-  wget http://www.dovecot.org/tmp/wiki2-export.tar.gz
+  wget https://www.dovecot.org/tmp/wiki2-export.tar.gz
   tar xzf wiki2-export.tar.gz
   if [ $? != 0 ]; then
     echo "Failed to uncompress wiki docs"