diff --git a/src/main/java/com/budiyev/android/codescanner/CodeScanner.java b/src/main/java/com/budiyev/android/codescanner/CodeScanner.java
index 035de88..5bb45a3 100644
--- a/src/main/java/com/budiyev/android/codescanner/CodeScanner.java
+++ b/src/main/java/com/budiyev/android/codescanner/CodeScanner.java
@@ -628,6 +628,9 @@ private FinishInitializationTask(@NonNull Point frameSize) {
 
         @Override
         public void run() {
+            if (!mInitialized) {
+                return;
+            }
             mScannerView.setFrameSize(mFrameSize);
             mScannerView.setCodeScanner(CodeScanner.this);
             startPreview();