diff --git a/components/mqtt/component.mk b/components/mqtt/component.mk
index 19e4980..7c77159 100644
--- a/components/mqtt/component.mk
+++ b/components/mqtt/component.mk
@@ -2,3 +2,7 @@ COMPONENT_SUBMODULES += esp-mqtt
 COMPONENT_ADD_INCLUDEDIRS := esp-mqtt/include
 COMPONENT_SRCDIRS :=  esp-mqtt esp-mqtt/lib
 COMPONENT_PRIV_INCLUDEDIRS := esp-mqtt/lib/include
+
+ifeq ($(GCC_NOT_5_2_0), 1)
+esp-mqtt/lib/transport_ws.o: CFLAGS += -Wno-format-overflow
+endif