diff --git a/tabby-ssh/src/profiles.ts b/tabby-ssh/src/profiles.ts
index 36693401..cea2dac1 100644
--- a/tabby-ssh/src/profiles.ts
+++ b/tabby-ssh/src/profiles.ts
@@ -20,7 +20,7 @@ export class SSHProfilesService extends QuickConnectProfileProvider<SSHProfile>
             auth: null,
             password: null,
             privateKeys: [],
-            keepaliveInterval: null,
+            keepaliveInterval: 5000,
             keepaliveCountMax: 10,
             readyTimeout: null,
             x11: false,
diff --git a/tabby-ssh/src/session/ssh.ts b/tabby-ssh/src/session/ssh.ts
index 6e023a87..5d75a30a 100644
--- a/tabby-ssh/src/session/ssh.ts
+++ b/tabby-ssh/src/session/ssh.ts
@@ -317,7 +317,7 @@ export class SSHSession {
                     key: this.profile.options.algorithms?.[SSHAlgorithmType.HOSTKEY]?.filter(x => supportedAlgorithms[SSHAlgorithmType.HOSTKEY].includes(x)),
                     compression: this.profile.options.algorithms?.[SSHAlgorithmType.COMPRESSION]?.filter(x => supportedAlgorithms[SSHAlgorithmType.COMPRESSION].includes(x)),
                 },
-                keepaliveIntervalSeconds: this.profile.options.keepaliveInterval ? Math.round(this.profile.options.keepaliveInterval / 1000) : undefined,
+                keepaliveIntervalSeconds: Math.round((this.profile.options.keepaliveInterval ?? 15000) / 1000),
                 keepaliveCountMax: this.profile.options.keepaliveCountMax,
                 connectionTimeoutSeconds: this.profile.options.readyTimeout ? Math.round(this.profile.options.readyTimeout / 1000) : undefined,
             },