diff --git a/include/lwipopts.h b/include/lwipopts.h
index fadd433..ba0aee7 100644
--- a/include/lwipopts.h
+++ b/include/lwipopts.h
@@ -45,6 +45,7 @@
 
 #if __ANDROID__
 #define LWIP_PROVIDE_ERRNO          0
+#define SOCKLEN_T_DEFINED
 #elif !defined(_MSC_VER)
 #define LWIP_PROVIDE_ERRNO          1
 #endif