diff --git a/admin/howto/preprint.mdwn b/admin/howto/preprint.mdwn
index b0905c6..4e86f71 100644
--- a/admin/howto/preprint.mdwn
+++ b/admin/howto/preprint.mdwn
@@ -52,7 +52,7 @@ texte without any link (or bibliography reference), no LaTeX, etc. The
 title must be properly calitalized (see
 [[the manuscript guidelines|ref/manuscript_guidelines/#capitalization]]
 for details). The preprint topic is chosen among those already
-existing,and the appropriate parameter is the name of a file in
+existing, and the appropriate parameter is the name of a file in
 `/tag/topic` (without `.mdwn`), for example `flow` pour "_Visual
 Flow_". New topics can be created if needed. preprints without
 identified topics are automatically classified as "Other".