diff --git a/components/lwip/Makefile b/components/lwip/Makefile
index e159c25c2..cf9c361f5 100644
--- a/components/lwip/Makefile
+++ b/components/lwip/Makefile
@@ -2,7 +2,7 @@
 # Component Makefile
 #
 
-COMPONENT_ADD_INCLUDEDIRS := include/lwip include/lwip/port
+COMPONENT_ADD_INCLUDEDIRS := include/lwip include/lwip/port include/lwip/posix
 
 COMPONENT_SRCDIRS := api apps/sntp apps core/ipv4 core/ipv6 core netif port/freertos port/netif port