diff --git a/libretro/libretro.go b/libretro/libretro.go
index d9751e2c..33708efd 100644
--- a/libretro/libretro.go
+++ b/libretro/libretro.go
@@ -572,6 +572,7 @@ func (core *Core) Serialize(size uint) ([]byte, error) {
 		return nil, errors.New("retro_serialize failed")
 	}
 	bytes := C.GoBytes(data, C.int(size))
+	C.free(data)
 	return bytes, nil
 }