diff --git a/Makefile.am b/Makefile.am
index 78b83f1..960ca07 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,4 @@
 ## Process this file with automake to produce Makefile.in
-ACLOCAL_AMFLAGS = -I m4
 SUBDIRS = lib gtp ggsn sgsnemu doc
 
 pkgconfigdir = $(libdir)/pkgconfig