diff --git a/src/main/kotlin/html4tree/main.kt b/src/main/kotlin/html4tree/main.kt
index 3049fce..68a9298 100644
--- a/src/main/kotlin/html4tree/main.kt
+++ b/src/main/kotlin/html4tree/main.kt
@@ -341,6 +341,7 @@ fun write_index_file(curr_dir: File, content: String) {
 fun process_dir(curr_dir: File, excludeSet: Set<String>? = null, dirFiles: Array<File>? = null){
     
     val exclude: Set<String> = excludeSet ?: process_ignore_file(curr_dir)
+    val directoryName = curr_dir.name.ifEmpty { "Root" }
 
     val index_top = """<!doctype html>
 <html lang="ko">
@@ -352,12 +353,12 @@ fun process_dir(curr_dir: File, excludeSet: Set<String>? = null, dirFiles: Array
         <meta http-equiv="Content-Security-Policy" content="default-src 'none'; style-src '${STYLE_HASH}'; base-uri 'none'; form-action 'none';">
         <!-- 보안 향상: 리퍼러를 통한 디렉토리 경로 노출 방지 -->
         <meta name="referrer" content="no-referrer">
-        <title>${curr_dir.getName().escapeHtml()}</title>
+        <title>${directoryName.escapeHtml()}</title>
         <style>${CSS_CONTENT}</style>
      </head>
      <body>
        <main>
-         <h1>${curr_dir.getName().escapeHtml()}</h1>
+         <h1>${directoryName.escapeHtml()}</h1>
          <nav aria-label="디렉토리 목록">
          <ul role="list">
             <li><a class="dir-link" href="./.." aria-label="상위 디렉토리로 이동" title="상위 디렉토리로 이동"><span class="icon" aria-hidden="true">&#x21B0;</span> <span>..</span></a></li>
diff --git a/src/test/kotlin/html4tree/MainTest.kt b/src/test/kotlin/html4tree/MainTest.kt
index 46353fe..97b68c7 100644
--- a/src/test/kotlin/html4tree/MainTest.kt
+++ b/src/test/kotlin/html4tree/MainTest.kt
@@ -731,4 +731,19 @@ class MainTest {
             tempDir.deleteRecursively()
         }
     }
+
+    @Test
+    fun testProcessDirEmptyNameFallback() {
+        val fakeRoot = object : File(tempDir, "fakeRoot") {
+            override fun getName() = ""
+        }
+        fakeRoot.mkdir()
+        process_dir(fakeRoot, setOf(), arrayOf())
+        val indexHtml = File(fakeRoot, "index.html")
+        assertTrue(indexHtml.exists())
+        val content = indexHtml.readText()
+        assertTrue(content.contains("<title>Root</title>"))
+        assertTrue(content.contains("<h1>Root</h1>"))
+    }
+
 }
