diff --git a/encoding.cabal b/encoding.cabal
index 4327ad0..18743f3 100644
--- a/encoding.cabal
+++ b/encoding.cabal
@@ -99,4 +99,10 @@ Library
   Other-Modules:
     Data.Encoding.Base
     Data.Encoding.Helper.Template
-    Data.Encoding.GB18030Data
\ No newline at end of file
+    Data.Encoding.GB18030Data
+  Includes:
+    system_encoding.h
+  Install-Includes:
+    system_encoding.h
+  C-Sources:
+    system_encoding.c
\ No newline at end of file