diff --git a/res/modules/bit_converter.lua b/res/modules/bit_converter.lua
index 2686c2c2..86afa334 100644
--- a/res/modules/bit_converter.lua
+++ b/res/modules/bit_converter.lua
@@ -68,19 +68,19 @@ local function floatOrDoubleToBytes(val, opt)
       if opt == 'd' then
         val = mantissa
         for i = 1, 6 do
-          table.insert(bytes, math.floor(val) % (2 ^ 8))
+          bytes[#bytes + 1] = math.floor(val) % (2 ^ 8)
           val = math.floor(val / (2 ^ 8))
         end
       else
-        table.insert(bytes, math.floor(mantissa) % (2 ^ 8))
+        bytes[#bytes + 1] = math.floor(mantissa) % (2 ^ 8)
         val = math.floor(mantissa / (2 ^ 8))
-        table.insert(bytes, math.floor(val) % (2 ^ 8))
+        bytes[#bytes + 1] = math.floor(val) % (2 ^ 8)
         val = math.floor(val / (2 ^ 8))
       end
 
-      table.insert(bytes, math.floor(exponent * ((opt == 'd') and 16 or 128) + val) % (2 ^ 8))
+      bytes[#bytes + 1] = math.floor(exponent * ((opt == 'd') and 16 or 128) + val) % (2 ^ 8)
       val = math.floor((exponent * ((opt == 'd') and 16 or 128) + val) / (2 ^ 8))
-      table.insert(bytes, math.floor(sign * 128 + val) % (2 ^ 8))
+      bytes[#bytes + 1] = math.floor(sign * 128 + val) % (2 ^ 8)
       val = math.floor((sign * 128 + val) / (2 ^ 8))
 
       if not endianness then
diff --git a/src/logic/scripting/lua/libfile.cpp b/src/logic/scripting/lua/libfile.cpp
index e3e88d17..3a00e0dd 100644
--- a/src/logic/scripting/lua/libfile.cpp
+++ b/src/logic/scripting/lua/libfile.cpp
@@ -141,10 +141,13 @@ static int l_file_write_bytes(lua::State* L) {
 
     fs::path path = resolve_path(lua::require_string(L, pathIndex));
 
+    if (auto bytearray = lua::touserdata<lua::Bytearray>(L, -1)) {
+        auto& bytes = bytearray->data();
+        return lua::pushboolean(L, files::write_bytes(path, bytes.data(), bytes.size()));
+    }
+
     std::vector<ubyte> bytes;
-
     int result = read_bytes_from_table(L, -1, bytes);
-
     if(result != 1) {
         return result;
     } else {