diff --git a/apps/dokploy/__test__/server/server-validate.test.ts b/apps/dokploy/__test__/server/server-validate.test.ts
new file mode 100644
index 000000000..71e537116
--- /dev/null
+++ b/apps/dokploy/__test__/server/server-validate.test.ts
@@ -0,0 +1,64 @@
+import { execFileSync, execSync } from "node:child_process";
+import { chmodSync, mkdtempSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import path from "node:path";
+import { validateSwarm } from "@dokploy/server";
+import { describe, expect, it } from "vitest";
+
+const resolveBin = (name: string) =>
+	execSync(`command -v ${name}`, { encoding: "utf8" }).trim();
+
+/**
+ * Build a sandbox PATH so `command -v docker` only sees our fake docker
+ * binary, while `grep` passes through to the real system binary. Using the
+ * real `grep` is intentional: the bug was an unanchored `grep -q 'active'`
+ * substring match, and the fix anchors it with `grep -qx 'active'`, so we
+ * must assert the real grep line-anchoring behavior, not a shim's.
+ */
+const makeSandbox = (localNodeState: string) => {
+	const dir = mkdtempSync(path.join(tmpdir(), "dokploy-server-validate-"));
+	for (const tool of ["grep"]) {
+		const shim = path.join(dir, tool);
+		writeFileSync(shim, `#!/bin/sh\nexec ${resolveBin(tool)} "$@"\n`);
+		chmodSync(shim, 0o755);
+	}
+	const docker = path.join(dir, "docker");
+	writeFileSync(
+		docker,
+		[
+			"#!/bin/sh",
+			'if [ "$1" = "info" ] && [ "$2" = "--format" ]; then',
+			`	echo "${localNodeState}"`,
+			"	exit 0",
+			"fi",
+			"exit 1",
+		].join("\n"),
+	);
+	chmodSync(docker, 0o755);
+	return dir;
+};
+
+const runValidateSwarm = (sandboxPath: string) =>
+	execFileSync(resolveBin("bash"), ["-c", validateSwarm()], {
+		encoding: "utf8",
+		env: { ...process.env, PATH: sandboxPath },
+	}).trim();
+
+describe("validateSwarm", () => {
+	it("reports true when the node is an active swarm member", () => {
+		expect(runValidateSwarm(makeSandbox("active"))).toBe("true");
+	});
+
+	it("reports false when the node is not part of any swarm (LocalNodeState=inactive)", () => {
+		// Regression: the buggy `grep -q 'active'` matched `inactive` as a
+		// substring (in+active), falsely reporting isSwarmInstalled=true.
+		expect(runValidateSwarm(makeSandbox("inactive"))).toBe("false");
+	});
+
+	it.each(["pending", "error", "locked"])(
+		"reports false for the non-active LocalNodeState=%s",
+		(state) => {
+			expect(runValidateSwarm(makeSandbox(state))).toBe("false");
+		},
+	);
+});
diff --git a/packages/server/src/setup/server-validate.ts b/packages/server/src/setup/server-validate.ts
index f55bbe616..aad6c11e1 100644
--- a/packages/server/src/setup/server-validate.ts
+++ b/packages/server/src/setup/server-validate.ts
@@ -18,7 +18,7 @@ export const validateRClone = () => `
 `;
 
 export const validateSwarm = () => `
-  if docker info --format '{{.Swarm.LocalNodeState}}' | grep -q 'active'; then
+  if docker info --format '{{.Swarm.LocalNodeState}}' | grep -qx 'active'; then
     echo true
   else
     echo false