diff --git a/src/feature.h b/src/feature.h
index 434c07f413..330a74868e 100644
--- a/src/feature.h
+++ b/src/feature.h
@@ -1088,6 +1088,13 @@
 # endif
 #endif
 
+/*
+ * Note: Only one of the following may be defined:
+ * FEAT_MOUSE_GPM
+ * FEAT_SYSMOUSE
+ * FEAT_MOUSE_JSB
+ * FEAT_MOUSE_PTERM
+ */
 #if defined(FEAT_NORMAL) && defined(HAVE_GPM)
 # define FEAT_MOUSE_GPM
 #endif
diff --git a/src/version.c b/src/version.c
index 4a5a0be90f..9884bf9129 100644
--- a/src/version.c
+++ b/src/version.c
@@ -728,6 +728,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    900,
 /**/
     899,
 /**/