diff --git a/src/documentation/haiku_book/midi/midi2endpoint.xml b/src/documentation/haiku_book/midi/midi2endpoint.xml
index 95ef673262..656d7d45ac 100644
--- a/src/documentation/haiku_book/midi/midi2endpoint.xml
+++ b/src/documentation/haiku_book/midi/midi2endpoint.xml
@@ -329,7 +329,7 @@
 	</sect3>
 	
 	<sect3 id="bmidiendpoint_setproperties">
-		<title>status_t BMidiEndpoint::SetProperties(const BMessage* props)</title>
+		<title>status_t BMidiEndpoint::SetProperties(const BMessage* properties)</title>
 		
 		<para>
 			Changes the properties of the endpoint
@@ -423,7 +423,7 @@
 	</sect3>
 	
 	<sect3 id="bmidiendpoint_getproperties">
-		<title>status_t BMidiEndpoint::GetProperties(BMessage* props) const</title>
+		<title>status_t BMidiEndpoint::GetProperties(BMessage* properties) const</title>
 		
 		<para>
 			Reads the properties of the endpoint