diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/DefaultGameRepository.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/DefaultGameRepository.java
index a912006a3..9407a5920 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/DefaultGameRepository.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/DefaultGameRepository.java
@@ -94,7 +94,7 @@ public class DefaultGameRepository implements GameRepository {
 
     @Override
     public File getLibraryFile(Version version, Library lib) {
-        if ("local".equals(lib.getHint()))
+        if ("local".equals(lib.getHint()) && lib.getFileName() != null)
             return new File(getVersionRoot(version.getId()), "libraries/" + lib.getFileName());
         else
             return new File(getBaseDirectory(), "libraries/" + lib.getPath());