diff --git a/lightningd/invoice.c b/lightningd/invoice.c
index 162bf4475..109fbf9b4 100644
--- a/lightningd/invoice.c
+++ b/lightningd/invoice.c
@@ -1163,7 +1163,7 @@ static struct command_result *json_invoice(struct command *cmd,
 				    INVOICE_MAX_LABEL_LEN);
 	}
 
-	if (strlen(desc_val) >= BOLT11_FIELD_BYTE_LIMIT) {
+	if (strlen(desc_val) > BOLT11_FIELD_BYTE_LIMIT) {
 		return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
 				    "Descriptions greater than %d bytes "
 				    "not yet supported "