diff --git a/shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/model/MercuryModel.kt b/shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/model/MercuryModel.kt
index 2dd1da5..d566a7b 100644
--- a/shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/model/MercuryModel.kt
+++ b/shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/model/MercuryModel.kt
@@ -6,12 +6,12 @@ class MercuryModel {
 
     @Serializable
     class ParsedContent(
-        val title: String?,
-        val content: String?,
-        val lead_image_url: String?, // NOSONAR
-        val url: String?,
-        val error: Boolean?,
-        val message: String?,
-        val failed: Boolean?
+        val title: String? = null,
+        val content: String? = null,
+        val lead_image_url: String? = null, // NOSONAR
+        val url: String? = null,
+        val error: Boolean? = null,
+        val message: String? = null,
+        val failed: Boolean? = null
     )
 }
diff --git a/shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/model/SelfossModel.kt b/shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/model/SelfossModel.kt
index eebfb77..9068c9a 100644
--- a/shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/model/SelfossModel.kt
+++ b/shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/model/SelfossModel.kt
@@ -24,8 +24,8 @@ class SelfossModel {
     @Serializable
     class Stats(
         val total: Int,
-        val unread: Int?,
-        val starred: Int?
+        val unread: Int? = null,
+        val starred: Int? = null
     )
 
     @Serializable
@@ -36,9 +36,9 @@ class SelfossModel {
 
     @Serializable
     data class ApiInformation(
-        val version: String?,
-        val apiversion: String?,
-        val configuration: ApiConfiguration?
+        val version: String? = null,
+        val apiversion: String? = null,
+        val configuration: ApiConfiguration? = null
     ) {
         fun getApiMajorVersion(): Int {
             var versionNumber = 0
@@ -54,9 +54,9 @@ class SelfossModel {
     @Serializable
     data class ApiConfiguration(
         @Serializable(with = BooleanSerializer::class)
-        val publicMode: Boolean?,
+        val publicMode: Boolean? = null,
         @Serializable(with = BooleanSerializer::class)
-        val authEnabled: Boolean?
+        val authEnabled: Boolean? = null
     ) {
         fun isAuthEnabled() = authEnabled ?: true
 
@@ -75,7 +75,7 @@ class SelfossModel {
     data class SourceStats(
         override val id: Int,
         override var title: String,
-        override var unread: Int?,
+        override var unread: Int? = null,
         override var error: String? = null,
         override var icon: String? = null
         ) : Source
@@ -86,11 +86,11 @@ class SelfossModel {
         override var title: String,
         override var unread: Int? = null,
         @Serializable(with = TagsListSerializer::class)
-        var tags: List<String>?,
-        var spout: String?,
-        override var error: String?,
-        override var icon: String?,
-        var params: SourceParams?
+        var tags: List<String>? = null,
+        var spout: String? = null,
+        override var error: String? = null,
+        override var icon: String? = null,
+        var params: SourceParams? = null
     ) : Source
 
     @Serializable
@@ -107,13 +107,13 @@ class SelfossModel {
         var unread: Boolean,
         @Serializable(with = BooleanSerializer::class)
         var starred: Boolean,
-        val thumbnail: String?,
-        val icon: String?,
+        val thumbnail: String? = null,
+        val icon: String? = null,
         val link: String,
         val sourcetitle: String,
         @Serializable(with = TagsListSerializer::class)
         val tags: List<String>,
-        val author: String?
+        val author: String? = null
     ) {
         fun getLinkDecoded(): String {
             var stringUrl: String
diff --git a/shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/rest/SelfossApi.kt b/shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/rest/SelfossApi.kt
index 7f6f59e..b97bd93 100644
--- a/shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/rest/SelfossApi.kt
+++ b/shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/rest/SelfossApi.kt
@@ -36,6 +36,7 @@ class SelfossApi(private val appSettingsService: AppSettingsService) {
                     prettyPrint = true
                     isLenient = true
                     ignoreUnknownKeys = true
+                    explicitNulls = false
                 })
             }
             install(Logging) {