diff --git a/scripts/split_chapters.zsh.in b/scripts/split_chapters.zsh.in
index 0a630ca4..17ee1616 100644
--- a/scripts/split_chapters.zsh.in
+++ b/scripts/split_chapters.zsh.in
@@ -39,5 +39,5 @@ for chapter in $chapters; do
 done
 
 # Make source an index to the chapters
-> $src <<< "esyscmd([[loadchapters.zsh $dir/<0->-*.md]])"
+> $src <<< "esyscmd([[loadchapters.zsh \"$dir/<0->-*.md\"]])"
 @GIT@ add $src