diff --git a/src/libcharon/plugins/eap_radius/eap_radius_provider.c b/src/libcharon/plugins/eap_radius/eap_radius_provider.c
index 2a9d7674a..7c794616b 100644
--- a/src/libcharon/plugins/eap_radius/eap_radius_provider.c
+++ b/src/libcharon/plugins/eap_radius/eap_radius_provider.c
@@ -467,7 +467,7 @@ METHOD(attribute_provider_t, create_attribute_enumerator, enumerator_t*,
 }
 
 METHOD(eap_radius_provider_t, add_framed_ip, void,
-	private_eap_radius_provider_t *this, uintptr_t id, host_t *ip)
+	private_eap_radius_provider_t *this, u_int32_t id, host_t *ip)
 {
 	this->listener.mutex->lock(this->listener.mutex);
 	add_addr(this, this->listener.unclaimed, id, ip);
@@ -475,7 +475,7 @@ METHOD(eap_radius_provider_t, add_framed_ip, void,
 }
 
 METHOD(eap_radius_provider_t, add_attribute, void,
-	private_eap_radius_provider_t *this, uintptr_t id,
+	private_eap_radius_provider_t *this, u_int32_t id,
 	configuration_attribute_type_t type, chunk_t data)
 {
 	attr_t *attr;