diff --git a/srcpkgs/pwnat/template b/srcpkgs/pwnat/template
index d27a40ca188..10e51e613f5 100644
--- a/srcpkgs/pwnat/template
+++ b/srcpkgs/pwnat/template
@@ -13,6 +13,10 @@ checksum=365da981ba1a39d7e3c8427fbcd9e7fcd3dd16cd30ae7e3b0aca50511fd8e1b1
 wrksrc="${pkgname}-${_githash}"
 build_style=gnu-makefile
 
+do_configure() {
+	sed -i 's#sys/unistd.h#unistd.h#' $(find -name '*.[ch]')
+}
+
 do_install() {
 	vbin pwnat
 }