diff --git a/apps/android/app/src/main/java/chat/simplex/app/model/SimpleXAPI.kt b/apps/android/app/src/main/java/chat/simplex/app/model/SimpleXAPI.kt
index ada4d57020..138d452083 100644
--- a/apps/android/app/src/main/java/chat/simplex/app/model/SimpleXAPI.kt
+++ b/apps/android/app/src/main/java/chat/simplex/app/model/SimpleXAPI.kt
@@ -1346,6 +1346,7 @@ data class KeepAliveOpts(
 val json = Json {
   prettyPrint = true
   ignoreUnknownKeys = true
+  encodeDefaults = true
 }
 
 @Serializable