diff --git a/tests/unit/java/com/android/server/ConnectivityServiceTest.java b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
index 42b0d59..35c1f41 100755
--- a/tests/unit/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
@@ -4323,7 +4323,9 @@
         testFactory.terminate();
         testFactory.assertNoRequestChanged();
         if (networkCallback != null) mCm.unregisterNetworkCallback(networkCallback);
-        handlerThread.quit();
+
+        handlerThread.quitSafely();
+        handlerThread.join();
     }
 
     @Test
@@ -4384,6 +4386,8 @@
         expectNoRequestChanged(testFactoryAll); // still seeing the request
 
         mWiFiAgent.disconnect();
+        handlerThread.quitSafely();
+        handlerThread.join();
     }
 
     @Test
@@ -4417,7 +4421,8 @@
                 }
             }
         }
-        handlerThread.quit();
+        handlerThread.quitSafely();
+        handlerThread.join();
     }
 
     @Test
@@ -6038,7 +6043,8 @@
             testFactory.assertNoRequestChanged();
         } finally {
             mCm.unregisterNetworkCallback(cellNetworkCallback);
-            handlerThread.quit();
+            handlerThread.quitSafely();
+            handlerThread.join();
         }
     }
 
@@ -6628,7 +6634,8 @@
             }
         } finally {
             testFactory.terminate();
-            handlerThread.quit();
+            handlerThread.quitSafely();
+            handlerThread.join();
         }
     }
 
@@ -15331,6 +15338,8 @@
         expectNoRequestChanged(oemPaidFactory);
         internetFactory.expectRequestAdd();
         mCm.unregisterNetworkCallback(wifiCallback);
+        handlerThread.quitSafely();
+        handlerThread.join();
     }
 
     /**
@@ -15695,6 +15704,8 @@
             assertTrue(testFactory.getMyStartRequested());
         } finally {
             testFactory.terminate();
+            handlerThread.quitSafely();
+            handlerThread.join();
         }
     }