diff --git a/lib/installer.js b/lib/installer.js
index cc2cb5b..91f9ed1 100644
--- a/lib/installer.js
+++ b/lib/installer.js
@@ -131,7 +131,7 @@ function unzipJavaDownload(repoRoot, fileEnding, destinationFolder) {
         const stats = fs.statSync(jdkFile);
         if (stats.isFile()) {
             yield extractFiles(jdkFile, fileEnding, destinationFolder);
-            const jdkDirectory = fs.readdirSync(destinationFolder)[0];
+            const jdkDirectory = path.join(destinationFolder, fs.readdirSync(destinationFolder)[0]);
             yield unpackJars(jdkDirectory, path.join(jdkDirectory, 'bin'));
             return jdkDirectory;
         }
diff --git a/src/installer.ts b/src/installer.ts
index 03572bb..b5d4fe3 100644
--- a/src/installer.ts
+++ b/src/installer.ts
@@ -128,7 +128,10 @@ async function unzipJavaDownload(
   const stats = fs.statSync(jdkFile);
   if (stats.isFile()) {
     await extractFiles(jdkFile, fileEnding, destinationFolder);
-    const jdkDirectory = fs.readdirSync(destinationFolder)[0];
+    const jdkDirectory = path.join(
+      destinationFolder,
+      fs.readdirSync(destinationFolder)[0]
+    );
     await unpackJars(jdkDirectory, path.join(jdkDirectory, 'bin'));
     return jdkDirectory;
   } else {