--- syslog-ng-3.4.1.orig/modules/afmongodb/libmongo-client/configure.ac
+++ syslog-ng-3.4.1/modules/afmongodb/libmongo-client/configure.ac
@@ -15,7 +15,7 @@
 
 AC_CONFIG_MACRO_DIR([m4])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS(config.h)
 
 AC_ARG_WITH([versioned-symbols], AC_HELP_STRING([--with-versioned-symbols],[Use versioned symbols]),[dnl
 vsymldflags="-Wl,--version-script,\${srcdir}/libmongo-client.ver -Wl,-O1"
@@ -24,7 +24,6 @@
 dnl ***************************************************************************
 dnl Checks for programs.
 AC_PROG_CC
-AM_PROG_CC_STDC
 AC_PROG_MAKE_SET
 PKG_PROG_PKG_CONFIG
 LT_INIT([shared])