diff --git a/app/src/main/java/com/example/sensortestingapp/MainActivity.kt b/app/src/main/java/com/example/sensortestingapp/MainActivity.kt
index 4132570..91c60a3 100644
--- a/app/src/main/java/com/example/sensortestingapp/MainActivity.kt
+++ b/app/src/main/java/com/example/sensortestingapp/MainActivity.kt
@@ -75,7 +75,7 @@ class MainActivity : AppCompatActivity() {
             }
         }
 
-    private var scanResults: MutableMap<String, ScanResult> = HashMap();
+    private var scanResults = HashMap<String, ScanResult>();
 
     override fun onCreate(savedInstanceState: Bundle?) {
         WindowCompat.setDecorFitsSystemWindows(window, false)
@@ -204,6 +204,10 @@ class MainActivity : AppCompatActivity() {
             )
 
         }
+
+        override fun onScanFailed(errorCode: Int) {
+            Log.e("ScanCallback", "onScanFailed: code $errorCode")
+        }
     }
 
     private fun getDisplayScanResults(): List<ScanResult> {