diff --git a/jdk/src/share/classes/sun/tools/jar/Main.java b/jdk/src/share/classes/sun/tools/jar/Main.java
index 6d2a67810fe..ecd76d6e800 100644
--- a/jdk/src/share/classes/sun/tools/jar/Main.java
+++ b/jdk/src/share/classes/sun/tools/jar/Main.java
@@ -56,7 +56,7 @@ class Main {
     Set<File> entries = new LinkedHashSet<File>();
 
     // Directories specified by "-C" operation.
-    List<String> paths = new ArrayList<String>();
+    Set<String> paths = new HashSet<String>();
 
     CRC32 crc32 = new CRC32();
     /*