diff --git a/epan/proto.c b/epan/proto.c
index be065fde0b..cce9e064c4 100644
--- a/epan/proto.c
+++ b/epan/proto.c
@@ -8112,7 +8112,7 @@ register_string_errors(void)
 	proto_set_cant_toggle(proto_string_errors);
 }
 
-#define PROTO_PRE_ALLOC_HF_FIELDS_MEM (210000+PRE_ALLOC_EXPERT_FIELDS_MEM)
+#define PROTO_PRE_ALLOC_HF_FIELDS_MEM (220000+PRE_ALLOC_EXPERT_FIELDS_MEM)
 static int
 proto_register_field_init(header_field_info *hfinfo, const int parent)
 {