diff --git a/lib/sassc/native.rb b/lib/sassc/native.rb
index 74e0099e..3b9f515f 100644
--- a/lib/sassc/native.rb
+++ b/lib/sassc/native.rb
@@ -34,7 +34,6 @@ module Native
     require_relative "native/sass_input_style"
     require_relative "native/sass_output_style"
     require_relative "native/string_list"
-    require_relative "native/lib_c"
 
     # Remove the redundant "sass_" from the beginning of every method name
     def self.attach_function(*args)
@@ -53,10 +52,9 @@ def self.return_string_array(ptr)
     end
 
     def self.native_string(string)
-      string = "#{string}\0"
-      data = Native::LibC.malloc(string.bytesize)
-      data.write_string(string)
-      data
+      m = FFI::MemoryPointer.from_string(string)
+      m.autorelease = false
+      m
     end
 
     require_relative "native/native_context_api"
diff --git a/lib/sassc/native/lib_c.rb b/lib/sassc/native/lib_c.rb
deleted file mode 100644
index 8e9b08ee..00000000
--- a/lib/sassc/native/lib_c.rb
+++ /dev/null
@@ -1,21 +0,0 @@
-# frozen_string_literal: true
-
-module SassC
-  module Native
-    module LibC
-      extend FFI::Library
-      ffi_lib FFI::Library::LIBC
-
-      # memory allocators
-      attach_function :malloc, [:size_t], :pointer
-      # attach_function :calloc, [:size_t], :pointer
-      # attach_function :valloc, [:size_t], :pointer
-      # attach_function :realloc, [:pointer, :size_t], :pointer
-      # attach_function :free, [:pointer], :void
-
-      # memory movers
-      # attach_function :memcpy, [:pointer, :pointer, :size_t], :pointer
-      # attach_function :bcopy, [:pointer, :pointer, :size_t], :void
-    end
-  end
-end
diff --git a/test/native_test.rb b/test/native_test.rb
index 66b38eec..c83ad52a 100644
--- a/test/native_test.rb
+++ b/test/native_test.rb
@@ -185,9 +185,9 @@ def test_custom_importer
         funct = FFI::Function.new(:pointer, [:pointer, :pointer, :pointer]) do |url, prev, cookie|
           list = Native.make_import_list(2)
 
-          str = "$var: 5px;\0"
-          data = Native::LibC.malloc(str.size)
-          data.write_string(str)
+          str = "$var: 5px;"
+          data = FFI::MemoryPointer.from_string(str)
+          data.autorelease = false
 
           entry0 = Native.make_import_entry("fake_includ.scss", data, nil)
           entry1 = Native.make_import_entry("not_included.scss", nil, nil)