diff --git a/src/popupwin.c b/src/popupwin.c
index c926536..ee59af2 100644
--- a/src/popupwin.c
+++ b/src/popupwin.c
@@ -265,6 +265,8 @@
     buf->b_p_swf = FALSE;   // no swap file
     buf->b_p_bl = FALSE;    // unlisted buffer
     buf->b_locked = TRUE;
+    // Avoid that 'buftype' is reset when this buffer is entered.
+    buf->b_p_initialized = TRUE;
 
     nr = (int)dict_get_number(d, (char_u *)"tab");
     if (nr == 0)
diff --git a/src/version.c b/src/version.c
index 0420cb6..282d045 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1427,
+/**/
     1426,
 /**/
     1425,