diff --git a/configure.ac b/configure.ac
index ba66ef66d..62d8b6209 100644
--- a/configure.ac
+++ b/configure.ac
@@ -14,12 +14,12 @@ AC_CONFIG_MACRO_DIR([m4])
 AC_CANONICAL_TARGET
 AC_USE_SYSTEM_EXTENSIONS
 
-AM_INIT_AUTOMAKE([1.12 -Wall -Werror -Wno-portability foreign tar-ustar subdir-objects serial-tests])
+AM_INIT_AUTOMAKE([1.11 -Wall -Werror -Wno-portability foreign tar-ustar subdir-objects])
 
 AC_CANONICAL_HOST
 AC_CANONICAL_BUILD
 
-AC_PREREQ([2.65])
+AC_PREREQ([2.63])
 
 
 AC_CONFIG_HEADERS([config.h:config.in])dnl Keep filename to 8.3 for MS-DOS.