diff --git a/libs/pbd/file_archive.cc b/libs/pbd/file_archive.cc
index 0c880a7780..bf01bf0214 100644
--- a/libs/pbd/file_archive.cc
+++ b/libs/pbd/file_archive.cc
@@ -178,6 +178,12 @@ FileArchive::~FileArchive ()
 	}
 }
 
+void
+FileArchive::require_progress ()
+{
+	_req.mp.progress = this;
+}
+
 std::string
 FileArchive::fetch (const std::string & url, const std::string & destdir) const
 {
@@ -428,7 +434,8 @@ FileArchive::do_extract (struct archive* a)
 
 	for (;;) {
 		int r = archive_read_next_header (a, &entry);
-		if (!_req.mp.progress) {
+
+		if (_req.mp.progress) {
 			// file i/o -- not URL
 			const uint64_t read = archive_filter_bytes (a, -1);
 			progress (read, _req.mp.length);
@@ -460,6 +467,10 @@ FileArchive::do_extract (struct archive* a)
 			}
 		}
 	}
+	if (_req.mp.progress && rv == 0) {
+		// file i/o -- not URL
+		progress (_req.mp.length, _req.mp.length);
+	}
 
 	archive_read_close (a);
 	archive_read_free (a);
diff --git a/libs/pbd/pbd/file_archive.h b/libs/pbd/pbd/file_archive.h
index 45a954377e..7633833d0b 100644
--- a/libs/pbd/pbd/file_archive.h
+++ b/libs/pbd/pbd/file_archive.h
@@ -18,6 +18,8 @@
 #ifndef _pbd_archive_h_
 #define _pbd_archive_h_
 
+#include <atomic>
+
 #include <pthread.h>
 
 #include "pbd/signals.h"
@@ -57,6 +59,8 @@ class LIBPBD_API FileArchive
 
 		PBD::Signal2<void, size_t, size_t> progress; // TODO
 
+		void require_progress ();
+
 		struct MemPipe {
 			public:
 				MemPipe ()
@@ -100,8 +104,8 @@ class LIBPBD_API FileArchive
 				size_t   size;
 				bool     done;
 
-				double   processed;
-				double   length;
+				size_t   processed;
+				size_t   length;
 				FileArchive* progress;
 
 			private: