diff --git a/libadlin/tunnel.go b/libadlin/tunnel.go
index 34187f8..c06d174 100644
--- a/libadlin/tunnel.go
+++ b/libadlin/tunnel.go
@@ -66,6 +66,8 @@ func readWgDump() (wgd map[string]WGDump, err error) {
 		if time.Since(wgDumpCache_time) > time.Second*10 {
 			wgd, err = _readWgDump()
 			if err != nil {
+				wgDumpCache_mutex.Unlock()
+				wgDumpCache_mutex.RLock()
 				return
 			}