diff --git a/docs/bin/ln-sphinx-subprojects b/docs/bin/ln-sphinx-subprojects
index f07cc0b..085baff 100755
--- a/docs/bin/ln-sphinx-subprojects
+++ b/docs/bin/ln-sphinx-subprojects
@@ -1,35 +1,35 @@
 #!/bin/bash
 set -e
 
 create_links () {
-    mkdir sources/
+    mkdir -p sources
     for pymodule in $(cd ../../ && bin/ls-py-modules) ; do
         if [ "$pymodule" = 'swh-docs' ] ; then
             continue
         fi
         if [ ! -e "$pymodule" -a -d "../../${pymodule}/docs" ] ; then
             ln -s "../../${pymodule}/docs" "$pymodule"
         fi
         if [ -d "../../${pymodule}/swh" ] ; then
-            cp -fr --link "../../${pymodule}/swh/" "sources/"
+            rsync -a --include='*.py' --include='*/' --exclude='*' --prune-empty-dirs "../../${pymodule}/swh" "sources/"
         fi
     done
 }
 
 remove_links () {
     for pymodule in $(cd ../../ && bin/ls-py-modules) ; do
         if [ "$pymodule" = 'swh-docs' ] ; then
             continue
         fi
         if [ -L "$pymodule" ] ; then
             rm "$pymodule"
         fi
     done
     rm -rf sources
 }
 
 if [ "$1" = "--remove" ] ; then
     remove_links
 else
     create_links
 fi