diff --git a/src/cli/daemon-cli/install.ts b/src/cli/daemon-cli/install.ts
index 8663133f053..7be6b882643 100644
--- a/src/cli/daemon-cli/install.ts
+++ b/src/cli/daemon-cli/install.ts
@@ -142,8 +142,12 @@ function ensureNvmCaCertsInDotEnv(params: {
   env: Record<string, string | undefined>;
   json: boolean;
   warnings: string[];
+  platform?: NodeJS.Platform;
+  execPath?: string;
 }): void {
-  if (process.platform !== "linux" || !isNvmNode(params.env, process.execPath)) {
+  const platform = params.platform ?? process.platform;
+  const execPath = params.execPath ?? process.execPath;
+  if (platform !== "linux" || !isNvmNode(params.env, execPath)) {
     return;
   }
   if (params.env.NODE_EXTRA_CA_CERTS) {
@@ -158,7 +162,7 @@ function ensureNvmCaCertsInDotEnv(params: {
     const stateDir = resolveGatewayStateDir(params.env);
     const envFile = path.join(stateDir, ".env");
     const existing = fs.existsSync(envFile) ? fs.readFileSync(envFile, "utf8") : "";
-    if (existing.includes("NODE_EXTRA_CA_CERTS")) {
+    if (/^NODE_EXTRA_CA_CERTS=/m.test(existing)) {
       return;
     }
     const line = `NODE_EXTRA_CA_CERTS=${caBundle}\n`;