diff --git a/Launcher/src/main/java/ru/gravit/launcher/client/LauncherUpdateController.java b/Launcher/src/main/java/ru/gravit/launcher/client/LauncherUpdateController.java
index 94b83434..b6cf06b6 100644
--- a/Launcher/src/main/java/ru/gravit/launcher/client/LauncherUpdateController.java
+++ b/Launcher/src/main/java/ru/gravit/launcher/client/LauncherUpdateController.java
@@ -40,7 +40,7 @@ public void postDiff(UpdateRequest request, UpdateRequestEvent e, HashedDir.Diff
             AtomicReference<NewLauncherSettings.HashedStoreEntry> lastEn = null;
             ArrayList<String> removed = new ArrayList<>();
             diff.mismatch.walk(File.separator, (path, name, entry) -> {
-                if(entry.getType() == HashedEntry.Type.DIR) return false;
+                if(entry.getType() == HashedEntry.Type.DIR) return HashedDir.WalkAction.CONTINUE;
                 HashedFile file = (HashedFile) entry;
                 //Первый экспериментальный способ - честно обходим все возможные Store
                 Path ret = null;
@@ -82,7 +82,7 @@ public void postDiff(UpdateRequest request, UpdateRequestEvent e, HashedDir.Diff
                         removed.add(path.concat(File.separator).concat(name));
                     }
                 }
-                return false;
+                return HashedDir.WalkAction.CONTINUE;
             });
             for(String rem : removed)
             {
@@ -94,7 +94,7 @@ public Path tryFind(NewLauncherSettings.HashedStoreEntry en, HashedFile file) th
     {
         AtomicReference<Path> ret = null;
         en.hdir.walk(File.separator, (path, name, entry) -> {
-            if(entry.getType() == HashedEntry.Type.DIR) return false;
+            if(entry.getType() == HashedEntry.Type.DIR) return HashedDir.WalkAction.CONTINUE;
             HashedFile tfile = (HashedFile) entry;
             if(tfile.isSame(file))
             {
@@ -105,14 +105,14 @@ public Path tryFind(NewLauncherSettings.HashedStoreEntry en, HashedFile file) th
                     {
                         LogHelper.debug("[DIR:%s] Confirmed file %s in %s", en.name, name, path);
                         ret.set(tdir);
-                        return true;
+                        return HashedDir.WalkAction.STOP;
                     }
                 } catch (IOException e)
                 {
                     LogHelper.error("Check file error %s", e.getMessage());
                 }
             }
-            return false;
+            return HashedDir.WalkAction.CONTINUE;
         });
         return ret.get();
     }
diff --git a/LauncherAPI/src/main/java/ru/gravit/launcher/request/update/UpdateRequest.java b/LauncherAPI/src/main/java/ru/gravit/launcher/request/update/UpdateRequest.java
index 40ee57e2..308c2fe2 100644
--- a/LauncherAPI/src/main/java/ru/gravit/launcher/request/update/UpdateRequest.java
+++ b/LauncherAPI/src/main/java/ru/gravit/launcher/request/update/UpdateRequest.java
@@ -204,7 +204,7 @@ public UpdateRequestEvent requestDo(StandartClientWebSocketService service) thro
                     LogHelper.error(ex);
                 }
             }
-            return false;
+            return HashedDir.WalkAction.CONTINUE;
         });
         totalSize = diff.mismatch.size();
         startTime = Instant.now();
diff --git a/libLauncher/src/main/java/ru/gravit/launcher/hasher/HashedDir.java b/libLauncher/src/main/java/ru/gravit/launcher/hasher/HashedDir.java
index 53ed49ab..bb1327be 100644
--- a/libLauncher/src/main/java/ru/gravit/launcher/hasher/HashedDir.java
+++ b/libLauncher/src/main/java/ru/gravit/launcher/hasher/HashedDir.java
@@ -342,28 +342,40 @@ public void walk(CharSequence separator, WalkCallback callback) throws IOExcepti
         String append = "";
         walk(append, separator, callback, true);
     }
+    public enum WalkAction
+    {
+        STOP, CONTINUE
+    }
 
     @FunctionalInterface
     public interface WalkCallback {
-        boolean walked(String path, String name, HashedEntry entry) throws IOException;
+        WalkAction walked(String path, String name, HashedEntry entry) throws IOException;
     }
 
-    private boolean walk(String append, CharSequence separator, WalkCallback callback, boolean noSeparator) throws IOException {
+    private WalkAction walk(String append, CharSequence separator, WalkCallback callback, boolean noSeparator) throws IOException {
         for (Map.Entry<String, HashedEntry> entry : map.entrySet()) {
             HashedEntry e = entry.getValue();
             if (e.getType() == Type.FILE) {
                 if (noSeparator)
-                    if(callback.walked(append + entry.getKey(), entry.getKey(), e)) return true;
+                {
+                    WalkAction a = callback.walked(append + entry.getKey(), entry.getKey(), e);
+                    if(a == WalkAction.STOP) return a;
+                }
                 else
-                    if(callback.walked(append + separator + entry.getKey(), entry.getKey(), e)) return true;
+                {
+                    WalkAction a = callback.walked(append + separator + entry.getKey(), entry.getKey(), e);
+                    if(a == WalkAction.STOP) return a;
+                }
             } else {
                 String newAppend;
                 if (noSeparator) newAppend = append + entry.getKey();
                 else newAppend = append + separator + entry.getKey();
-                if(callback.walked(newAppend, entry.getKey(), e)) return true;
-                if(((HashedDir) e).walk(newAppend, separator, callback, false)) return true;
+                WalkAction a = callback.walked(newAppend, entry.getKey(), e);
+                if(a == WalkAction.STOP) return a;
+                a = ((HashedDir) e).walk(newAppend, separator, callback, false);
+                if(a == WalkAction.STOP) return a;
             }
         }
-        return false;
+        return WalkAction.CONTINUE;
     }
 }