diff --git a/fs/operations/reopen.go b/fs/operations/reopen.go
index b2531ced0..9b86c6da3 100644
--- a/fs/operations/reopen.go
+++ b/fs/operations/reopen.go
@@ -138,6 +138,8 @@ func (h *ReOpen) open() error {
 		// Adjust range start to where we have got to
 		h.rangeOption.Start = h.start + h.offset
 	}
+	// Make a copy of the options as fs.FixRangeOption modifies them :-(
+	opts = append(make([]fs.OpenOption, 0, len(opts)), opts...)
 	h.tries++
 	if h.tries > h.maxTries {
 		h.err = errTooManyTries
diff --git a/fs/operations/reopen_test.go b/fs/operations/reopen_test.go
index 153c0334a..891888c50 100644
--- a/fs/operations/reopen_test.go
+++ b/fs/operations/reopen_test.go
@@ -39,6 +39,8 @@ type reOpenTestObject struct {
 //
 // This will break after reading the number of bytes in breaks
 func (o *reOpenTestObject) Open(ctx context.Context, options ...fs.OpenOption) (io.ReadCloser, error) {
+	// Lots of backends do this - make sure it works as it modifies options
+	fs.FixRangeOption(options, o.Size())
 	gotHash := false
 	gotRange := false
 	startPos := int64(0)