diff --git a/lib/filestream/filestream_openbsd.go b/lib/filestream/filestream_openbsd.go
index 9e5383193..631a915d4 100644
--- a/lib/filestream/filestream_openbsd.go
+++ b/lib/filestream/filestream_openbsd.go
@@ -20,8 +20,8 @@ func (st *streamTracker) adviseDontNeed(n int, fdatasync bool) error {
 			return fmt.Errorf("unix.Fsync error: %w", err)
 		}
 	}
+	st.offset += blockSize
 	st.length -= blockSize
-
 	return nil
 }
 
diff --git a/lib/fs/fs.go b/lib/fs/fs.go
index b434b46b1..fb05fa876 100644
--- a/lib/fs/fs.go
+++ b/lib/fs/fs.go
@@ -338,6 +338,5 @@ func mustGetFreeSpace(path string) uint64 {
 	if err := unix.Fstatfs(int(fd), &stat); err != nil {
 		logger.Panicf("FATAL: cannot determine free disk space on %q: %s", path, err)
 	}
-
 	return freeSpace(stat)
 }