diff --git a/configure.ac b/configure.ac
index 956763d..6a624ab 100644
--- a/configure.ac
+++ b/configure.ac
@@ -24,7 +24,7 @@ AC_CONFIG_FILES( \
   test/Makefile \
   tools/Makefile)
 
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS(config.h)
 AM_INIT_AUTOMAKE([1.8 gnits check-news dist-bzip2])
 AM_ACLOCAL_INCLUDE(m4)
 AM_MAINTAINER_MODE
@@ -40,7 +40,7 @@ AC_GNU_SOURCE
 AC_AIX
 AC_ISC_POSIX
 AC_PROG_LIBTOOL
-AM_PROG_CC_STDC
+AC_PROG_CC
 AM_PROG_CC_C_O
 AC_PROG_INSTALL
 AC_PROG_LN_S
diff --git a/m4/typevar.m4 b/m4/typevar.m4
index ce9578d..66077eb 100644
--- a/m4/typevar.m4
+++ b/m4/typevar.m4
@@ -6,7 +6,6 @@
 ##   defined in errno.h
 AC_DEFUN([ye_CHECK_VAR_PROGRAM_INVOCATION_SHORT_NAME],
 [AC_REQUIRE([AC_PROG_CC])dnl
-AC_REQUIRE([AM_PROG_CC_STDC])dnl
 dnl
 
 dnl Check for program_invocation_short_name (present on GNU systems only?)