diff --git a/configure.ac b/configure.ac
index 5d7f9b0..0c84467 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12,7 +12,7 @@ AC_ISC_POSIX
 
 AM_INIT_AUTOMAKE(1.8)
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS(config.h)
 
 AC_PROG_CC
 AM_PROG_CC_STDC