diff --git a/repos/libports/src/app/extract/main.cc b/repos/libports/src/app/extract/main.cc
index bfc01bcc0f..84a659eb84 100644
--- a/repos/libports/src/app/extract/main.cc
+++ b/repos/libports/src/app/extract/main.cc
@@ -78,6 +78,8 @@ struct Extract::Extracted_archive : Noncopyable
 	{
 		archive * const ptr = archive_read_new();
 
+		using Noncopyable::Noncopyable;
+
 		~Source()
 		{
 			archive_read_close(ptr);
@@ -89,6 +91,8 @@ struct Extract::Extracted_archive : Noncopyable
 	{
 		archive * const ptr = archive_write_disk_new();
 
+		using Noncopyable::Noncopyable;
+
 		~Destination()
 		{
 			archive_write_close(ptr);