diff --git a/vfs/read_write.go b/vfs/read_write.go
index 8f6e2f39c..2dd6be9c1 100644
--- a/vfs/read_write.go
+++ b/vfs/read_write.go
@@ -184,8 +184,6 @@ func (fh *RWFileHandle) String() string {
 	if fh == nil {
 		return "<nil *RWFileHandle>"
 	}
-	fh.mu.Lock()
-	defer fh.mu.Unlock()
 	if fh.file == nil {
 		return "<nil *RWFileHandle.file>"
 	}