diff --git a/acinclude.m4 b/acinclude.m4
index ccbd30a..f0b2228 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -440,7 +440,6 @@ AC_SUBST(LIBG15)
 AC_SUBST(LIBGLCD)
 AC_SUBST(LIBFTDI)
 AC_SUBST(LIBXOSD)
-AC_SUBST(LIBUSBLCD)
 ])