diff --git a/app/src/main/kotlin/org/koitharu/kotatsu/core/os/AppValidator.kt b/app/src/main/kotlin/org/koitharu/kotatsu/core/os/AppValidator.kt
index 035d46313..e95207ca3 100644
--- a/app/src/main/kotlin/org/koitharu/kotatsu/core/os/AppValidator.kt
+++ b/app/src/main/kotlin/org/koitharu/kotatsu/core/os/AppValidator.kt
@@ -13,7 +13,7 @@ class AppValidator @Inject constructor(
 ) {
 	@Suppress("NewApi")
 	val isOriginalApp by lazy {
-		val certificates = mapOf(CERT_SHA256.toByteArray() to PackageManager.CERT_INPUT_SHA256)
+		val certificates = mapOf(CERT_SHA256.hexToByteArray() to PackageManager.CERT_INPUT_SHA256)
 		PackageInfoCompat.hasSignatures(context.packageManager, context.packageName, certificates, false)
 	}
 
diff --git a/app/src/main/res/values-es/plurals.xml b/app/src/main/res/values-es/plurals.xml
index 7a958bc17..ef71e2da0 100644
--- a/app/src/main/res/values-es/plurals.xml
+++ b/app/src/main/res/values-es/plurals.xml
@@ -35,16 +35,6 @@
         <item quantity="many">Hace %1$d meses</item>
         <item quantity="other">Hace %1$d meses</item>
     </plurals>
-    <plurals name="minute">
-        <item quantity="one">%1$d minuto</item>
-        <item quantity="many">%1$d minutos</item>
-        <item quantity="other">%1$d minutos</item>
-    </plurals>
-    <plurals name="hour">
-        <item quantity="one">%1$d hora</item>
-        <item quantity="many">%1$d horas</item>
-        <item quantity="other">%1$d horas</item>
-    </plurals>
     <plurals name="hours">
         <item quantity="one">%1$d hora</item>
         <item quantity="many">%1$d horas</item>
@@ -55,4 +45,4 @@
         <item quantity="many">%1$d minutos</item>
         <item quantity="other">%1$d minutos</item>
     </plurals>
-</resources>
\ No newline at end of file
+</resources>