diff --git a/Doc/liburlparse.tex b/Doc/liburlparse.tex
index 32d88ee..3017a16 100644
--- a/Doc/liburlparse.tex
+++ b/Doc/liburlparse.tex
@@ -61,7 +61,7 @@
 an empty query (the draft states that these are equivalent).
 \end{funcdesc}
 
-\begin{funcdesc}{urljoin}{base\, url\optional{\, allow_fragments}}
+\begin{funcdesc}{urljoin}{base, url\optional{, allow_fragments}}
 Construct a full (``absolute'') URL by combining a ``base URL''
 (\var{base}) with a ``relative URL'' (\var{url}).  Informally, this
 uses components of the base URL, in particular the addressing scheme,