diff --git a/depends/packages/miniupnpc.mk b/depends/packages/miniupnpc.mk
index 81517965d..9976db43c 100644
--- a/depends/packages/miniupnpc.mk
+++ b/depends/packages/miniupnpc.mk
@@ -9,6 +9,7 @@ $(package)_build_opts=CC="$($(package)_cc)"
 $(package)_build_opts_darwin=OS=Darwin LIBTOOL="$($(package)_libtool)"
 $(package)_build_opts_mingw32=-f Makefile.mingw
 $(package)_build_env+=CFLAGS="$($(package)_cflags) $($(package)_cppflags)" AR="$($(package)_ar)"
+$(package)_build_env+=CFLAGS=-D_DARWIN_C_SOURCE
 endef
 
 define $(package)_preprocess_cmds