diff --git a/wifi/1.4/default/wifi.cpp b/wifi/1.4/default/wifi.cpp
index 4f48d7e..9c6b0f0 100644
--- a/wifi/1.4/default/wifi.cpp
+++ b/wifi/1.4/default/wifi.cpp
@@ -124,6 +124,8 @@
             }
         }
         LOG(ERROR) << "Wifi HAL start failed";
+        // Clear the event callback objects since the HAL start failed.
+        event_cb_handler_.invalidate();
     }
     return wifi_status;
 }
@@ -158,6 +160,8 @@
         }
         LOG(ERROR) << "Wifi HAL stop failed";
     }
+    // Clear the event callback objects since the HAL is now stopped.
+    event_cb_handler_.invalidate();
     return wifi_status;
 }