diff --git a/man/sd_journal_add_match.xml b/man/sd_journal_add_match.xml
index ad2486d749..04b33883cb 100644
--- a/man/sd_journal_add_match.xml
+++ b/man/sd_journal_add_match.xml
@@ -66,7 +66,7 @@
                         </funcprototype>
 
                         <funcprototype>
-                                <funcdef>int <function>sd_journal_flush_matches</function></funcdef>
+                                <funcdef>void <function>sd_journal_flush_matches</function></funcdef>
                                 <paramdef>sd_journal* <parameter>j</parameter></paramdef>
                         </funcprototype>
                 </funcsynopsis>