diff --git a/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/ConferenceDto.kt b/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/ConferenceDto.kt
index 734b1f84..59d0b049 100644
--- a/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/ConferenceDto.kt
+++ b/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/ConferenceDto.kt
@@ -8,12 +8,12 @@ import de.nicidienase.chaosflix.common.util.ConferenceUtil
 data class ConferenceDto(
     @SerializedName("acronym") var acronym: String = "",
     @SerializedName("aspect_ratio") var aspectRatio: String = "",
-    @SerializedName("updated_at") var updatedAt: String = "",
+    @SerializedName("updated_at") var updatedAt: String? = "",
     @SerializedName("title") var title: String = "",
     @SerializedName("schedule_url") var scheduleUrl: String?,
     @SerializedName("slug") var slug: String = "",
     @SerializedName("event_last_released_at") var lastReleaseAt: String? = "",
-    @SerializedName("webgen_location") var webgenLocation: String = "",
+    @SerializedName("webgen_location") var webgenLocation: String? = "",
     @SerializedName("logo_url") var logoUrl: String = "",
     @SerializedName("images_url") var imagesUrl: String = "",
     @SerializedName("recordings_url") var recordingsUrl: String = "",
diff --git a/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/EventDto.kt b/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/EventDto.kt
index c24f39b1..0ab8678b 100644
--- a/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/EventDto.kt
+++ b/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/EventDto.kt
@@ -15,17 +15,17 @@ data class EventDto(
     var link: String? = "",
     var description: String?,
     @SerializedName("original_language")
-    var originalLanguage: String = "",
+    var originalLanguage: String? = "",
     var persons: Array<String>?,
     var tags: Array<String>?,
     var date: String? = "",
     @SerializedName("release_date")
-    var releaseDate: String = "",
+    var releaseDate: String? = "",
     @SerializedName("updated_at")
-    var updatedAt: String = "",
+    var updatedAt: String? = "",
     var length: Long = 0,
     @SerializedName("thumb_url")
-    var thumbUrl: String = "",
+    var thumbUrl: String? = "",
     @SerializedName("poster_url")
     var posterUrl: String = "",
     @SerializedName("frontend_link")
diff --git a/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/RecordingDto.kt b/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/RecordingDto.kt
index 390bd9eb..4f6c3465 100644
--- a/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/RecordingDto.kt
+++ b/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/RecordingDto.kt
@@ -18,14 +18,14 @@ data class RecordingDto(
     var width: Int = 0,
     var height: Int = 0,
     @SerializedName("updated_at")
-    var updatedAt: String = "",
+    var updatedAt: String? = "",
     @SerializedName("recording_url")
     var recordingUrl: String = "",
     var url: String = "",
     @SerializedName("event_url")
     var eventUrl: String = "",
     @SerializedName("conference_url")
-    var conferenceUrl: String = ""
+    var conferenceUrl: String? = ""
 ) {
     val recordingID: Long
     get() {
diff --git a/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/persistence/Conference.kt b/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/persistence/Conference.kt
index 36e48058..62c569b8 100644
--- a/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/persistence/Conference.kt
+++ b/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/persistence/Conference.kt
@@ -54,13 +54,13 @@ data class Conference(
             aspectRatio = con.aspectRatio,
             title = con.title,
             slug = con.slug,
-            webgenLocation = con.webgenLocation,
+            webgenLocation = con.webgenLocation ?: "",
             scheduleUrl = con.scheduleUrl,
             logoUrl = con.logoUrl,
             imagesUrl = con.imagesUrl,
             recordingsUrl = con.recordingsUrl,
             url = con.url,
-            updatedAt = con.updatedAt,
+            updatedAt = con.updatedAt ?: "",
             tagsUsefull = con.tagsUsefull,
             lastReleasedAt = con.lastReleaseAt ?: "")
 
diff --git a/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/persistence/Event.kt b/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/persistence/Event.kt
index e07183a6..e5a7b786 100644
--- a/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/persistence/Event.kt
+++ b/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/persistence/Event.kt
@@ -94,12 +94,12 @@ data class Event(
             slug = event.slug,
             link = event.link,
             description = event.description,
-            originalLanguage = event.originalLanguage,
+            originalLanguage = event.originalLanguage ?: "",
             date = event.date,
-            releaseDate = event.releaseDate,
-            updatedAt = event.updatedAt,
+            releaseDate = event.releaseDate ?: "",
+            updatedAt = event.updatedAt ?: "",
             length = event.length,
-            thumbUrl = event.thumbUrl,
+            thumbUrl = event.thumbUrl ?: "",
             frontendLink = event.frontendLink,
             url = event.url,
             conferenceUrl = event.conferenceUrl,
diff --git a/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/persistence/Recording.kt b/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/persistence/Recording.kt
index a20be7cf..5af11f9d 100644
--- a/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/persistence/Recording.kt
+++ b/common/src/main/java/de/nicidienase/chaosflix/common/mediadata/entities/recording/persistence/Recording.kt
@@ -76,11 +76,11 @@ data class Recording(
             isHighQuality = rec.isHighQuality,
             width = rec.width,
             height = rec.height,
-            updatedAt = rec.updatedAt,
+            updatedAt = rec.updatedAt ?: "",
             recordingUrl = rec.recordingUrl,
             url = rec.url,
             eventUrl = rec.eventUrl,
-            conferenceUrl = rec.conferenceUrl,
+            conferenceUrl = rec.conferenceUrl ?: "",
             backendId = rec.recordingID)
 
     override fun writeToParcel(parcel: Parcel, flags: Int) {