diff --git a/configure.ac b/configure.ac
index 1bac2be..9a67273 100644
--- a/configure.ac
+++ b/configure.ac
@@ -155,6 +155,7 @@
 
 AC_CONFIG_FILES([Makefile
                  include/Makefile
+                 tools/Makefile
                  tests/Makefile
                  tests_boost/Makefile])
 AC_OUTPUT