diff --git a/Makefile.am b/Makefile.am
index 8db865d..59981dd 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,4 +1,6 @@
 
+AUTOMAKE_OPTIONS = 1.5
+
 SUBDIRS = 	coregrind . docs tests include auxprogs \
 		addrcheck \
 		memcheck \