diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/game/LauncherHelper.java b/HMCL/src/main/java/org/jackhuang/hmcl/game/LauncherHelper.java
index 354103696..715ea22be 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/game/LauncherHelper.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/game/LauncherHelper.java
@@ -62,7 +62,7 @@ public final class LauncherHelper {
         if (account == null)
             throw new IllegalStateException("No account");
 
-        Version version = repository.getVersion(selectedVersion);
+        Version version = repository.getResolvedVersion(selectedVersion);
         VersionSetting setting = profile.getVersionSetting(selectedVersion);
 
         Platform.runLater(() -> {
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/LibrariesUniqueTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/LibrariesUniqueTask.java
index 9a4fcb694..36507b71e 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/LibrariesUniqueTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/LibrariesUniqueTask.java
@@ -56,8 +56,16 @@ public class LibrariesUniqueTask extends TaskResult<Version> {
                     multimap.removeKey(id);
                     versionMap.put(id, number);
                     multimap.put(id, library);
-                } else if (number.compareTo(otherNumber) == 0) {
-                    multimap.put(id, library);
+                } else if (number.compareTo(otherNumber) == 0) { // same library id.
+                    boolean flag = false;
+                    // prevent from duplicated libraries
+                    for (Library otherLibrary : multimap.get(id))
+                        if (library.equals(otherLibrary)) {
+                            flag = true;
+                            break;
+                        }
+                    if (!flag)
+                        multimap.put(id, library);
                 }
             } else {
                 versionMap.put(id, number);