diff --git a/lib/src/main/java/com/github/omadahealth/lollipin/lib/managers/AppLockActivity.java b/lib/src/main/java/com/github/omadahealth/lollipin/lib/managers/AppLockActivity.java
index c2c72574..57be6f73 100644
--- a/lib/src/main/java/com/github/omadahealth/lollipin/lib/managers/AppLockActivity.java
+++ b/lib/src/main/java/com/github/omadahealth/lollipin/lib/managers/AppLockActivity.java
@@ -144,7 +144,7 @@ private void initLayoutForFingerprint() {
             mFingerprintManager = (FingerprintManager) getSystemService(Context.FINGERPRINT_SERVICE);
             mFingerprintUiHelper = new FingerprintUiHelper.FingerprintUiHelperBuilder(mFingerprintManager).build(mFingerprintImageView, mFingerprintTextView, this);
             try {
-            if (mFingerprintManager.isHardwareDetected() && mFingerprintUiHelper.isFingerprintAuthAvailable()
+            if (mFingerprintManager != null && mFingerprintManager.isHardwareDetected() && mFingerprintUiHelper.isFingerprintAuthAvailable()
                     && mLockManager.getAppLock().isFingerprintAuthEnabled()) {
                     mFingerprintImageView.setVisibility(View.VISIBLE);
                     mFingerprintTextView.setVisibility(View.VISIBLE);