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);
diff --git a/lib/src/main/res/values-de/strings.xml b/lib/src/main/res/values-de/strings.xml
new file mode 100644
index 00000000..e743104a
--- /dev/null
+++ b/lib/src/main/res/values-de/strings.xml
@@ -0,0 +1,14 @@
+
+<resources>
+    <string name="pin_code_forgot_text">Vergessen?</string>
+    <string name="pin_code_step_disable">Entferne deinen %d-Zahlen Pin</string>
+    <string name="pin_code_step_create">Erstelle einen %d-Zahlen Pin</string>
+    <string name="pin_code_step_change">Gib deinen aktuellen %d-Zahlen Pin ein</string>
+    <string name="pin_code_step_unlock">Gib deinen %d-Zahlen Pin ein</string>
+    <string name="pin_code_step_enable_confirm">Bestätige deinen %d-Zahlen Pin</string>
+
+    <string name="pin_code_fingerprint_text">Fingerabdruck</string>
+    <string name="pin_code_fingerprint_success">Fingerabdruck erkannt</string>
+    <string name="pin_code_fingerprint_not_recognized">Fingerabdruck nicht erkannt. Versuche es erneut</string>
+
+</resources>