diff --git a/configure.ac b/configure.ac
index dfc7219..9b5b173 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,10 +1,10 @@
-AC_INIT([advent], [4.2-dev], [https://github.com/troglobit/adventure/issues])
+AC_INIT([advent],[4.2-dev],[https://github.com/troglobit/adventure/issues])
 AC_CONFIG_AUX_DIR(aux)
 AM_INIT_AUTOMAKE([1.11 foreign])
 AM_SILENT_RULES([yes])
 
 AC_CONFIG_SRCDIR([src/advent.c])
-AC_CONFIG_HEADER([config.h])
+AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_FILES([Makefile doc/Makefile src/Makefile src/advent.desktop])
 
 AC_PROG_CC