Pleasing older autotools
diff --git a/configure.ac b/configure.ac
index 1c8a33c..2b3d4be 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,7 @@
 AC_INIT([libmtp], [0.1.0], [libmtp-users@lists.sourceforge.net])
 AM_INIT_AUTOMAKE([foreign])
 AC_CONFIG_SRCDIR([src/libmtp.c])
-AC_CONFIG_HEADER([config.h])
+AM_CONFIG_HEADER(config.h)
 
 # This can be overridden by the command line switch
 if test "$program_prefix" = NONE; then