Rename INCLUDES in Makefile.am.
diff --git a/Makefile.am b/Makefile.am
index f4ed5e1..85c2b4a 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -15,7 +15,7 @@ EXTRA_DIST = example.conf m4/gnulib-cache.m4 linux-usb-cgminer \
SUBDIRS = lib compat ccan
-INCLUDES = $(PTHREAD_FLAGS) -fno-strict-aliasing $(JANSSON_INCLUDES) $(USB_FLAGS)
+AM_CPPFLAGS = $(PTHREAD_FLAGS) -fno-strict-aliasing $(JANSSON_INCLUDES) $(USB_FLAGS)
bin_PROGRAMS = cgminer