diff --git a/quartz/src/main/java/com/vitorpamplona/quartz/nip01Core/hints/types/AddressHint.kt b/quartz/src/main/java/com/vitorpamplona/quartz/nip01Core/hints/types/AddressHint.kt
index e83191bc07..6ce25bf21f 100644
--- a/quartz/src/main/java/com/vitorpamplona/quartz/nip01Core/hints/types/AddressHint.kt
+++ b/quartz/src/main/java/com/vitorpamplona/quartz/nip01Core/hints/types/AddressHint.kt
@@ -20,7 +20,7 @@
  */
 package com.vitorpamplona.quartz.nip01Core.hints.types
 
-class AddressHint(
+data class AddressHint(
     val addressId: String,
     var relay: String? = null,
 ) : Hint {
diff --git a/quartz/src/main/java/com/vitorpamplona/quartz/nip01Core/hints/types/EventIdHint.kt b/quartz/src/main/java/com/vitorpamplona/quartz/nip01Core/hints/types/EventIdHint.kt
index 80faa2149d..6b46738ae3 100644
--- a/quartz/src/main/java/com/vitorpamplona/quartz/nip01Core/hints/types/EventIdHint.kt
+++ b/quartz/src/main/java/com/vitorpamplona/quartz/nip01Core/hints/types/EventIdHint.kt
@@ -23,7 +23,7 @@ package com.vitorpamplona.quartz.nip01Core.hints.types
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
 import com.vitorpamplona.quartz.nip01Core.core.hexToByteArray
 
-class EventIdHint(
+data class EventIdHint(
     val eventId: HexKey,
     var relay: String? = null,
 ) : Hint {
diff --git a/quartz/src/main/java/com/vitorpamplona/quartz/nip01Core/hints/types/PubKeyHint.kt b/quartz/src/main/java/com/vitorpamplona/quartz/nip01Core/hints/types/PubKeyHint.kt
index 431c121215..e231077e68 100644
--- a/quartz/src/main/java/com/vitorpamplona/quartz/nip01Core/hints/types/PubKeyHint.kt
+++ b/quartz/src/main/java/com/vitorpamplona/quartz/nip01Core/hints/types/PubKeyHint.kt
@@ -23,7 +23,7 @@ package com.vitorpamplona.quartz.nip01Core.hints.types
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
 import com.vitorpamplona.quartz.nip01Core.core.hexToByteArray
 
-class PubKeyHint(
+data class PubKeyHint(
     val pubkey: HexKey,
     var relay: String? = null,
 ) : Hint {