diff --git a/index.js b/index.js
index 5e0ed88..2ce7ab1 100644
--- a/index.js
+++ b/index.js
@@ -94,8 +94,13 @@ module.exports = class RandomAccessFile extends RandomAccessStorage {
       // Should we aquire a read lock?
       const shared = self.mode === RDONLY
 
-      if (fsext.tryLock(self.fd, { shared })) onlock(null)
-      else onlock(createLockError(self.filename))
+      try {
+        const didLock = fsext.tryLock(self.fd, { shared })
+        if (didLock) onlock(null)
+        else onlock(createLockError(self.filename))
+      } catch (e) {
+        onlock(e)
+      }
     }
 
     function onlock (err) {