diff --git a/src/main/kotlin/dev/fyloz/trial/colorrecipesexplorer/model/validation/NullOrNotBlank.kt b/src/main/kotlin/dev/fyloz/trial/colorrecipesexplorer/model/validation/NullOrNotBlank.kt
index ef262c6..2202dac 100644
--- a/src/main/kotlin/dev/fyloz/trial/colorrecipesexplorer/model/validation/NullOrNotBlank.kt
+++ b/src/main/kotlin/dev/fyloz/trial/colorrecipesexplorer/model/validation/NullOrNotBlank.kt
@@ -3,6 +3,7 @@ package dev.fyloz.trial.colorrecipesexplorer.model.validation
 import javax.validation.Constraint
 import javax.validation.ConstraintValidator
 import javax.validation.ConstraintValidatorContext
+import javax.validation.Payload
 import kotlin.contracts.ExperimentalContracts
 import kotlin.contracts.contract
 import kotlin.reflect.KClass
@@ -14,7 +15,8 @@ private const val MESSAGE = "must be null or not blank"
 @Constraint(validatedBy = [NullOrNotBlankValidator::class])
 annotation class NullOrNotBlank(
     val message: String = MESSAGE,
-    val groups: Array<KClass<*>> = []
+    val groups: Array<KClass<*>> = [],
+    @Suppress("unused") val payload: Array<KClass<out Payload>> = []
 )
 
 class NullOrNotBlankValidator : ConstraintValidator<NullOrNotBlank, String> {
diff --git a/src/main/kotlin/dev/fyloz/trial/colorrecipesexplorer/model/validation/NullOrSize.kt b/src/main/kotlin/dev/fyloz/trial/colorrecipesexplorer/model/validation/NullOrSize.kt
index cfcb7d7..5fd5d5f 100644
--- a/src/main/kotlin/dev/fyloz/trial/colorrecipesexplorer/model/validation/NullOrSize.kt
+++ b/src/main/kotlin/dev/fyloz/trial/colorrecipesexplorer/model/validation/NullOrSize.kt
@@ -3,6 +3,7 @@ package dev.fyloz.trial.colorrecipesexplorer.model.validation
 import javax.validation.Constraint
 import javax.validation.ConstraintValidator
 import javax.validation.ConstraintValidatorContext
+import javax.validation.Payload
 import kotlin.reflect.KClass
 
 private const val MIN_SIZE = Long.MIN_VALUE
@@ -16,7 +17,8 @@ annotation class NullOrSize(
         val min: Long = MIN_SIZE,
         val max: Long = MAX_SIZE,
         val message: String = MESSAGE,
-        val groups: Array<KClass<*>> = []
+        val groups: Array<KClass<*>> = [],
+        @Suppress("unused") val payload: Array<KClass<out Payload>> = []
 )
 
 class NullOrSizeValidator : ConstraintValidator<NullOrSize, Any> {