diff --git a/lib/connectors/SentinelConnector/index.ts b/lib/connectors/SentinelConnector/index.ts
index a9d124f1..be40ef5b 100644
--- a/lib/connectors/SentinelConnector/index.ts
+++ b/lib/connectors/SentinelConnector/index.ts
@@ -165,15 +165,16 @@ export default class SentinelConnector extends AbstractConnector {
           resolved.port,
           endpointAddress
         );
+
         if (this.options.enableTLSForSentinelMode && this.options.tls) {
           Object.assign(resolved, this.options.tls);
           this.stream = createTLSConnection(resolved);
+          this.stream.once("secureConnect", this.initFailoverDetector.bind(this));
         } else {
           this.stream = createConnection(resolved);
+          this.stream.once("connect", this.initFailoverDetector.bind(this));
         }
 
-        this.stream.once("connect", () => this.initFailoverDetector());
-
         this.stream.once("error", (err) => {
           this.firstError = err;
         });