diff --git a/src/libcharon/plugins/eap_ttls/Makefile.am b/src/libcharon/plugins/eap_ttls/Makefile.am
index 94ce5cc1e..8cc82cc2e 100644
--- a/src/libcharon/plugins/eap_ttls/Makefile.am
+++ b/src/libcharon/plugins/eap_ttls/Makefile.am
@@ -1,6 +1,7 @@
 
 INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \
-	-I$(top_srcdir)/src/libcharon -I$(top_srcdir)/src/libtls
+	-I$(top_srcdir)/src/libcharon -I$(top_srcdir)/src/libtls \
+	-I$(top_srcdir)/src/libradius
 
 AM_CFLAGS = -rdynamic
 
diff --git a/src/libcharon/plugins/eap_ttls/eap_ttls_peer.c b/src/libcharon/plugins/eap_ttls/eap_ttls_peer.c
index d2feb7774..4b6897b1d 100644
--- a/src/libcharon/plugins/eap_ttls/eap_ttls_peer.c
+++ b/src/libcharon/plugins/eap_ttls/eap_ttls_peer.c
@@ -18,7 +18,7 @@
 
 #include <debug.h>
 #include <daemon.h>
-
+#include <radius_message.h>
 #include <sa/authenticators/eap/eap_method.h>
 
 typedef struct private_eap_ttls_peer_t private_eap_ttls_peer_t;
@@ -64,8 +64,6 @@ struct private_eap_ttls_peer_t {
 	eap_ttls_avp_t *avp;
 };
 
-#define MAX_RADIUS_ATTRIBUTE_SIZE	253
-
 METHOD(tls_application_t, process, status_t,
 	private_eap_ttls_peer_t *this, bio_reader_t *reader)
 {