diff --git a/codecs/avif/dec/README.md b/codecs/avif/dec/README.md
index ebebeeaf..bca2ac21 100644
--- a/codecs/avif/dec/README.md
+++ b/codecs/avif/dec/README.md
@@ -12,7 +12,3 @@ See `example.html`
 ### `RawImage decode(std::string buffer)`
 
 Decodes the given avif buffer into raw RGBA. `RawImage` is a class with 3 fields: `buffer`, `width`, and `height`.
-
-### `void free_result()`
-
-Frees the result created by `decode()`.
diff --git a/codecs/avif/enc/README.md b/codecs/avif/enc/README.md
index 843e0b7b..34fec51d 100644
--- a/codecs/avif/enc/README.md
+++ b/codecs/avif/enc/README.md
@@ -35,7 +35,3 @@ struct AvifOptions {
   int subsample;
 };
 ```
-
-### `void free_result()`
-
-Frees the result created by `encode()`.
diff --git a/codecs/avif/enc/avif_enc.d.ts b/codecs/avif/enc/avif_enc.d.ts
index 4c4788e2..ec9b887c 100644
--- a/codecs/avif/enc/avif_enc.d.ts
+++ b/codecs/avif/enc/avif_enc.d.ts
@@ -2,7 +2,6 @@ import { EncodeOptions } from '../../src/codecs/avif/encoder-meta';
 
 interface AVIFModule extends EmscriptenWasm.Module {
   encode(data: BufferSource, width: number, height: number, options: EncodeOptions): Uint8Array;
-  free_result(): void;
 }