diff --git a/configure.ac b/configure.ac
index bc68712..e4a4bdb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,7 +15,6 @@ AC_CONFIG_HEADERS(config.h)
 
 AC_ISC_POSIX
 AC_PROG_CC
-AM_PROG_CC_STDC
 AC_HEADER_STDC
 AC_C_CONST
 AM_ENABLE_SHARED