diff --git a/srcpkgs/libupnp1.8/template b/srcpkgs/libupnp1.8/template
index 949b2cc0a0..2e6f1926e9 100644
--- a/srcpkgs/libupnp1.8/template
+++ b/srcpkgs/libupnp1.8/template
@@ -13,6 +13,9 @@ wrksrc="pupnp-release-${version}"
 checksum=22adb8a54d71e5aa7315c3289fdb5bbbb6020199890abf4711a4426396f8e0df
 configure_args="--enable-ipv6 --enable-reuseaddr"
 
+# libupnp uses large file support, so users must do that, too
+CFLAGS="-D_FILE_OFFSET_BITS=64"
+
 pre_configure() {
 	autoreconf -fi
 }