--- a/vowpalwabbit/Makefile.am
+++ b/vowpalwabbit/Makefile.am
@@ -1,7 +1,8 @@
 lib_LTLIBRARIES = liballreduce.la libvw.la
 
 liballreduce_la_SOURCES = allreduce.cc
-include_HEADERS = allreduce.h
+# Added/distributed by top level Makefile.am
+#include_HEADERS = allreduce.h
 
 bin_PROGRAMS = vw active_interactor
 
