diff --git a/src/mark.c b/src/mark.c
index c872e2f0ff..7cd4f31bcb 100644
--- a/src/mark.c
+++ b/src/mark.c
@@ -1484,7 +1484,11 @@ add_mark(list_T *l, char_u *mname, pos_T *pos, int bufnr, char_u *fname)
     if (dict_add_string(d, "mark", mname) == FAIL
 	    || dict_add_list(d, "pos", lpos) == FAIL
 	    || (fname != NULL && dict_add_string(d, "file", fname) == FAIL))
+    {
+	if (lpos->lv_refcount == 0)
+	    list_free(lpos);
 	return FAIL;
+    }
 
     return OK;
 }
diff --git a/src/version.c b/src/version.c
index 770e09b860..8b35a87905 100644
--- a/src/version.c
+++ b/src/version.c
@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    258,
 /**/
     257,
 /**/