diff --git a/configure.ac b/configure.ac
index 5caba4f..4e22259 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,6 +2,7 @@ dnl Process this file with autoconf to produce a configure script
 AC_INIT(libblobpack.so,[0.1.0],mkschreder.uk@gmail.com)
 AC_CONFIG_AUX_DIR(config)
 AC_CONFIG_SRCDIR(./src/blob.c)
+AC_CONFIG_MACRO_DIR([m4])
 
 AM_INIT_AUTOMAKE
 AX_CODE_COVERAGE