diff --git a/daemon/src/main/java/org/lsposed/lspd/service/LSPModuleService.java b/daemon/src/main/java/org/lsposed/lspd/service/LSPModuleService.java
index bfb570c8..6c45cf46 100644
--- a/daemon/src/main/java/org/lsposed/lspd/service/LSPModuleService.java
+++ b/daemon/src/main/java/org/lsposed/lspd/service/LSPModuleService.java
@@ -36,6 +36,7 @@ import org.lsposed.daemon.BuildConfig;
 import org.lsposed.lspd.models.Module;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -50,13 +51,17 @@ public class LSPModuleService extends IXposedService.Stub {
     private final static String TAG = "LSPosedModuleService";
 
     private final static Set<Integer> uidSet = ConcurrentHashMap.newKeySet();
-    private final static Map<Module, LSPModuleService> serviceMap = new WeakHashMap<>();
+    private final static Map<Module, LSPModuleService> serviceMap = Collections.synchronizedMap(new WeakHashMap<>());
 
     public final static String FILES_DIR = "files";
 
     private final @NonNull
     Module loadedModule;
 
+    static void uidClear() {
+        uidSet.clear();
+    }
+
     static void uidStarts(int uid) {
         if (!uidSet.contains(uid)) {
             uidSet.add(uid);
diff --git a/daemon/src/main/java/org/lsposed/lspd/service/LSPosedService.java b/daemon/src/main/java/org/lsposed/lspd/service/LSPosedService.java
index b117bf33..7d0efab8 100644
--- a/daemon/src/main/java/org/lsposed/lspd/service/LSPosedService.java
+++ b/daemon/src/main/java/org/lsposed/lspd/service/LSPosedService.java
@@ -394,6 +394,7 @@ public class LSPosedService extends ILSPosedService.Stub {
                     | HiddenApiBridge.ActivityManager_UID_OBSERVER_GONE()
                     | HiddenApiBridge.ActivityManager_UID_OBSERVER_IDLE()
                     | HiddenApiBridge.ActivityManager_UID_OBSERVER_CACHED();
+            LSPModuleService.uidClear();
             ActivityManagerService.registerUidObserver(new IUidObserver.Stub() {
                 @Override
                 public void onUidActive(int uid) {