diff --git a/src/home_ranking.rs b/src/home_ranking.rs
index f7c6833..96d76ef 100644
--- a/src/home_ranking.rs
+++ b/src/home_ranking.rs
@@ -898,7 +898,9 @@ fn resolve_folder_catalog_sources(folder: &Map<String, Value>, addons_json: &str
             if s.get("catalogId").and_then(Value::as_str).is_none() {
                 continue;
             }
-            if let Some(t_url) = resolve_transport_url_json(&s.to_string(), addons_json) {
+            if let Some(t_url) = resolve_transport_url_json(&s.to_string(), addons_json)
+                .and_then(|json| serde_json::from_str::<String>(&json).ok())
+            {
                 let catalog_id = s.get("catalogId").and_then(Value::as_str).unwrap_or("");
                 let content_type = s.get("type").and_then(Value::as_str).unwrap_or("movie");
                 let mut entry =
@@ -914,7 +916,9 @@ fn resolve_folder_catalog_sources(folder: &Map<String, Value>, addons_json: &str
     if resolved.is_empty() {
         if let Some(catalog_id) = folder.get("catalogId").and_then(Value::as_str) {
             let src = json!({ "catalogId": catalog_id, "type": "movie" });
-            if let Some(t_url) = resolve_transport_url_json(&src.to_string(), addons_json) {
+            if let Some(t_url) = resolve_transport_url_json(&src.to_string(), addons_json)
+                .and_then(|json| serde_json::from_str::<String>(&json).ok())
+            {
                 let mut entry =
                     json!({ "transportUrl": t_url, "catalogId": catalog_id, "type": "movie" });
                 if let Some(g) = folder.get("genre").and_then(Value::as_str) {
diff --git a/src/search_plan.rs b/src/search_plan.rs
index 4a620b7..6dac9e6 100644
--- a/src/search_plan.rs
+++ b/src/search_plan.rs
@@ -660,7 +660,7 @@ pub(crate) fn resolve_transport_url_json(source_json: &str, addons_json: &str) -
                 })
         });
         if matches {
-            return Some(t_url.to_string());
+            return serde_json::to_string(t_url).ok();
         }
     }
     None
@@ -682,7 +682,7 @@ pub(crate) fn resolve_feed_option_genre_json(
         .and_then(Value::as_str)
         .filter(|s| !s.trim().is_empty())
     {
-        return Some(genre.to_string());
+        return serde_json::to_string(genre).ok();
     }
 
     let transport_url = option.get("transportUrl").and_then(Value::as_str)?;
@@ -721,7 +721,7 @@ pub(crate) fn resolve_feed_option_genre_json(
         .and_then(Value::as_str);
 
     let resolved = default_genre.or(if is_required { first_option } else { None })?;
-    Some(resolved.to_string())
+    serde_json::to_string(resolved).ok()
 }
 
 #[cfg(test)]