diff --git a/repos/libports/lib/mk/solo5.mk b/repos/libports/lib/mk/solo5.mk
index 92fadf36b..ac84bba33 100644
--- a/repos/libports/lib/mk/solo5.mk
+++ b/repos/libports/lib/mk/solo5.mk
@@ -18,3 +18,6 @@ INC_DIR += $(SOLO5_PORT_DIR)/include/solo5
 INC_DIR += $(REP_DIR)/include/solo5
 
 vpath bindings.cc $(SOLO5_PORT_DIR)/src/lib/solo5/bindings/genode
+
+# ignore warning about use of deprecated Xml_node API
+CC_CXX_WARN_STRICT :=