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1 files changed, 4 insertions, 2 deletions

diff --git a/fs.go b/fs.go
index 1e9b4ab..ca70f72 100644
--- a/fs.go
+++ b/fs.go
@@ -194,7 +194,7 @@ func NewPathPrefixStripper(prefixSize int) PathRewriteFunc {
 //
 // It is prohibited copying FS values. Create new values instead.
 type FS struct {
-	noCopy noCopy
+	noCopy noCopy //nolint:unused,structcheck
 
 	// Path to the root directory to serve files from.
 	Root string
@@ -1193,7 +1193,9 @@ func readFileHeader(f *os.File, compressed bool) ([]byte, error) {
 		N: 512,
 	}
 	data, err := ioutil.ReadAll(lr)
-	f.Seek(0, 0)
+	if _, err := f.Seek(0, 0); err != nil {
+		return nil, err
+	}
 
 	if zr != nil {
 		releaseGzipReader(zr)