diff --git a/texlive-20180414-source/texk/web2c/luatexdir/luaffi/ffi.h b/texlive-20180414-source/texk/web2c/luatexdir/luaffi/ffi.h
index 8be6ecc..94d082c 100644
--- a/texlive-20180414-source/texk/web2c/luatexdir/luaffi/ffi.h
+++ b/texlive-20180414-source/texk/web2c/luatexdir/luaffi/ffi.h
@@ -46,8 +46,10 @@ extern "C" {
 /* We should include something equivalent to */
 /* complex.h                                 */
 #else
+#if !defined(__LCC__)
 #include <complex.h>
 #define HAVE_COMPLEX
+#endif
 #define HAVE_LONG_DOUBLE
 #endif