diff --git a/openpgm.changes b/openpgm.changes
index eab5567..d47dec3 100644
--- a/openpgm.changes
+++ b/openpgm.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Oct 24 12:47:51 UTC 2017 - luca.boccassi@gmail.com
+
+- Create m4 directory before running autoreconf -fi to avoid build
+  failure on CentOS 6 due to older version of autoconf.
+
 -------------------------------------------------------------------
 Fri Oct  6 13:22:06 UTC 2017 - bwiedemann@suse.com
 
diff --git a/openpgm.spec b/openpgm.spec
index 7f9ea95..59b1c7b 100644
--- a/openpgm.spec
+++ b/openpgm.spec
@@ -80,6 +80,7 @@ This subpackage contains the header files for OpenPGM.
 %patch0 -p1
 
 %build
+mkdir -p m4
 autoreconf -fi
 %{configure} \
     --disable-static