diff --git a/src/tests/hnb-test-rua.c b/src/tests/hnb-test-rua.c
index 0882515c..1db69cdb 100644
--- a/src/tests/hnb-test-rua.c
+++ b/src/tests/hnb-test-rua.c
@@ -16,7 +16,8 @@ void hnb_test_rua_dt_handle(struct hnb_test *hnb, ANY_t *in)
 		return;
 	}
 
-	rc = ranap_cn_rx_co(hnb_test_rua_dt_handle_ranap, hnb, ies.ranaP_Message.buf, ies.ranaP_Message.size);
+	rc = ranap_cn_rx_co((ranap_handle_cb)hnb_test_rua_dt_handle_ranap, hnb, ies.ranaP_Message.buf,
+			    ies.ranaP_Message.size);
 
 	/* FIXME: what to do with the asn1c-allocated memory */
 	rua_free_directtransferies(&ies);
@@ -33,7 +34,8 @@ void hnb_test_rua_cl_handle(struct hnb_test *hnb, ANY_t *in)
 		return;
 	}
 
-	rc = ranap_cn_rx_cl(hnb_test_rua_cl_handle_ranap, hnb, ies.ranaP_Message.buf, ies.ranaP_Message.size);
+	rc = ranap_cn_rx_cl((ranap_handle_cb)hnb_test_rua_cl_handle_ranap, hnb, ies.ranaP_Message.buf,
+			    ies.ranaP_Message.size);
 
 	/* FIXME: what to do with the asn1c-allocated memory */
 	rua_free_connectionlesstransferies(&ies);