diff --git a/binding/dal.cc b/binding/dal.cc
index 911d415..62ea769 100644
--- a/binding/dal.cc
+++ b/binding/dal.cc
@@ -23,11 +23,11 @@ static Napi::Object RowIterator(const Napi::CallbackInfo& args) {
     free(next);
     return val;
   };
-  auto free_iter = [=](const Napi::CallbackInfo& a){
+  auto cleanup = [=](const Napi::CallbackInfo& a){
     FreeIter(iter);
   };
   it.Set("next", Napi::Function::New(env, next_row));
-  it.Set("free", Napi::Function::New(env, free_iter));
+  it.Set("cleanup", Napi::Function::New(env, cleanup));
   return it;
 }
 
diff --git a/dal/Binding.ts b/dal/Binding.ts
index f58abf6..2355f26 100644
--- a/dal/Binding.ts
+++ b/dal/Binding.ts
@@ -2,7 +2,7 @@ import { createRequire } from "node:module";
 const require = createRequire(import.meta.url);
 type RowIterator = {
   next: () => Buffer;
-  free: () => void;
+  cleanup: () => void;
 };
 type SQLite = {
   initSQLite: (pragmas: Buffer) => void;
diff --git a/dal/Bunding.ts b/dal/Bunding.ts
index 5fa7486..a6d8596 100644
--- a/dal/Bunding.ts
+++ b/dal/Bunding.ts
@@ -35,9 +35,8 @@ const {
   },
 });
 
-function initSQLite(pragmas: string) {
-  const buf = Buffer.from(pragmas);
-  InitSQLite(ptr(buf));
+function initSQLite(pragmas: Buffer) {
+  InitSQLite(ptr(pragmas));
 }
 
 function rowIterator(buf: Buffer) {
diff --git a/dal/node.napi.ts b/dal/node.napi.ts
index 9efe9f3..dd6eea5 100644
--- a/dal/node.napi.ts
+++ b/dal/node.napi.ts
@@ -27,7 +27,7 @@ export default class CBuilder<
       const response = iter.next();
       const rows = decodeRows(response);
       if (rows.length === 0) {
-        iter.free();
+        iter.cleanup();
         break;
       }
       for (const row of rows) {