diff --git a/package/network/utils/umbim/Makefile b/package/network/utils/umbim/Makefile
index cc34002f6e..126efdbbc6 100644
--- a/package/network/utils/umbim/Makefile
+++ b/package/network/utils/umbim/Makefile
@@ -36,6 +36,10 @@ endef
 TARGET_CFLAGS += \
 	-I$(STAGING_DIR)/usr/include -ffunction-sections -fdata-sections
 
+# Disable GCC 9 warning about pointers to members of a packed struct
+GCCV_GE = $(filter $(1),$(shell echo -e "$(1)\n$(GCCV)" | sort -V | head -n1))
+TARGET_CFLAGS += $(if $(call GCCV_GE,9),-Wno-address-of-packed-member)
+
 TARGET_LDFLAGS += -Wl,--gc-sections
 
 define Package/umbim/install