diff --git a/src/textprop.c b/src/textprop.c
index 92dc645..bc27aef 100644
--- a/src/textprop.c
+++ b/src/textprop.c
@@ -686,7 +686,11 @@
     skipstart = dict_get_bool(dict, (char_u *)"skipstart", 0);
 
     if (dict_find(dict, (char_u *)"id", -1) != NULL)
+    {
 	id = dict_get_number(dict, (char_u *)"id");
+	if (id == -1)
+	    id = -2;
+    }
     if (dict_find(dict, (char_u *)"type", -1))
     {
 	char_u	    *name = dict_get_string(dict, (char_u *)"type", FALSE);