diff --git a/app/src/main/java/com/chiller3/rsaf/PreferenceBaseActivity.kt b/app/src/main/java/com/chiller3/rsaf/PreferenceBaseActivity.kt
index ddb18b6..ed14248 100644
--- a/app/src/main/java/com/chiller3/rsaf/PreferenceBaseActivity.kt
+++ b/app/src/main/java/com/chiller3/rsaf/PreferenceBaseActivity.kt
@@ -217,8 +217,14 @@ abstract class PreferenceBaseActivity : AppCompatActivity() {
     private fun startBiometricAuth() {
         Log.d(tag, "Starting biometric authentication")
 
+        val deviceCredential = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            Authenticators.DEVICE_CREDENTIAL
+        } else {
+            0
+        }
+
         val promptInfo = BiometricPrompt.PromptInfo.Builder()
-            .setAllowedAuthenticators(Authenticators.BIOMETRIC_STRONG or Authenticators.DEVICE_CREDENTIAL)
+            .setAllowedAuthenticators(Authenticators.BIOMETRIC_STRONG or deviceCredential)
             .setTitle(getString(R.string.biometric_title))
             .build()