diff --git a/ospfclient/Makefile.am b/ospfclient/Makefile.am
index 0f37aa9..09d2ba8 100644
--- a/ospfclient/Makefile.am
+++ b/ospfclient/Makefile.am
@@ -1,6 +1,6 @@
 ## Automake.am for OSPF API client
 
-INCLUDES = @INCLUDES@ -I.. -I$(top_srcdir) -I$(top_srcdir)/lib -I$(top_builddir)/lib
+AM_CPPFLAGS = -I.. -I$(top_srcdir) -I$(top_srcdir)/lib -I$(top_builddir)/lib
 
 lib_LTLIBRARIES = libospfapiclient.la
 libospfapiclient_la_LDFLAGS = -version-info 0:0:0