diff --git a/configure.ac b/configure.ac
index 3bece79..f94c721 100644
--- a/configure.ac
+++ b/configure.ac
@@ -11,7 +11,4 @@ AC_PROG_CC
 AM_PROG_AR
 LT_INIT
 
-AC_HEADER_STDC
-AC_C_CONST
-
 AC_OUTPUT