diff --git a/configure.ac b/configure.ac
index 0f240ad..4a9d6a6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,7 +17,7 @@ AM_INIT_AUTOMAKE(exalt, 0.9)
 AC_PREREQ(2.52)
 
 
-AM_CONFIG_HEADER(src/config.h)
+AC_CONFIG_HEADERS(src/config.h)
 
 AC_CONFIG_MACRO_DIR([m4])
 
@@ -23,7 +23,6 @@ AC_CONFIG_MACRO_DIR([m4])
 
 AC_ISC_POSIX
 AC_PROG_CC
-AM_PROG_CC_STDC
 AC_HEADER_STDC
 AC_C_CONST
 AM_ENABLE_SHARED