diff --git a/dist/setup/index.js b/dist/setup/index.js
index 8d35353f..61e4bb61 100644
--- a/dist/setup/index.js
+++ b/dist/setup/index.js
@@ -73228,7 +73228,7 @@ function getNode(versionSpec, stable, checkLatest, auth, arch = os.arch()) {
         let toolPath;
         if (isNightly) {
             const nightlyVersion = findNightlyVersionInHostedToolcache(versionSpec, osArch);
-            toolPath = tc.find('node', nightlyVersion, osArch);
+            toolPath = nightlyVersion && tc.find('node', nightlyVersion, osArch);
         }
         else {
             toolPath = tc.find('node', versionSpec, osArch);
diff --git a/src/installer.ts b/src/installer.ts
index dab8900f..776ca6d4 100644
--- a/src/installer.ts
+++ b/src/installer.ts
@@ -88,7 +88,7 @@ export async function getNode(
       versionSpec,
       osArch
     );
-    toolPath = tc.find('node', nightlyVersion, osArch);
+    toolPath = nightlyVersion && tc.find('node', nightlyVersion, osArch);
   } else {
     toolPath = tc.find('node', versionSpec, osArch);
   }