diff --git a/src/vermiparous.js b/src/vermiparous.js
index ee2f0e5..4cf7e6f 100644
--- a/src/vermiparous.js
+++ b/src/vermiparous.js
@@ -1,5 +1,6 @@
 const KEYWORDS = ["asset", "code"];
 const MIN_KW_LENGTH = Math.min(...KEYWORDS.map((x) => x.length));
+const MAX_KW_LENGTH = Math.max(...KEYWORDS.map((x) => x.length));
 const SEMICOLON_CHARCODE = ";".charCodeAt(0);
 
 function isKeyword(buffer) {
@@ -15,7 +16,6 @@ export class Vermiparous {
     static en(code, assets) {
         const ret = [];
         for (const asset of assets) {
-            console.log(asset);
             ret.push(...strToBytes("asset"));
             ret.push(...strToBytes(asset.name.length.toString()));
             ret.push(...strToBytes(";"));
@@ -41,11 +41,10 @@ export class Vermiparous {
         let idx = 0;
         while (idx < bytes.length) {
             buffer.push(bytes[idx]);
-            if (buffer.length < MIN_KW_LENGTH) {
-                ++idx;
-                continue;
+            if (buffer.length >= MAX_KW_LENGTH) {
+                throw new Error("unreachable: something went wrong !");
             }
-            if (!isKeyword(buffer)) {
+            if (buffer.length < MIN_KW_LENGTH || !isKeyword(buffer)) {
                 ++idx;
                 continue;
             }