diff --git a/lib/internal/http2/core.js b/lib/internal/http2/core.js
index c9dfc8a2769894..eda587bc51ef45 100644
--- a/lib/internal/http2/core.js
+++ b/lib/internal/http2/core.js
@@ -3185,6 +3185,7 @@ class Http2SecureServer extends TLSServer {
     if (options.allowHTTP1 === true) {
       this.headersTimeout = 60_000; // Minimum between 60 seconds or requestTimeout
       this.requestTimeout = 300_000; // 5 minutes
+      this.connectionsCheckingInterval = 30_000; // 30 seconds
       this.on('listening', setupConnectionsTracking);
     }
     if (typeof requestListener === 'function')