diff --git a/editoast/src/models/stdcm_log.rs b/editoast/src/models/stdcm_log.rs
index 23e846d7754..b2d4016a7a8 100644
--- a/editoast/src/models/stdcm_log.rs
+++ b/editoast/src/models/stdcm_log.rs
@@ -24,7 +24,7 @@ editoast_common::schemas! {
 pub enum StdcmResponseOrError {
     #[schema(value_type = StdcmResponse)]
     Response(Response),
-    RequestError(InternalError),
+    RequestError(serde_json::Value),
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize, Model, ToSchema)]
diff --git a/editoast/src/views/timetable/stdcm.rs b/editoast/src/views/timetable/stdcm.rs
index 0617185fa8e..b739b66e764 100644
--- a/editoast/src/views/timetable/stdcm.rs
+++ b/editoast/src/views/timetable/stdcm.rs
@@ -303,7 +303,11 @@ async fn stdcm(
 
         let stdcm_response = match stdcm_response.clone() {
             Ok(response) => StdcmResponseOrError::Response(response),
-            Err(error) => StdcmResponseOrError::RequestError(error),
+            Err(error) => {
+                StdcmResponseOrError::RequestError(serde_json::to_value(error).unwrap_or(
+                    serde_json::Value::String("Failed to serialize the error".into()),
+                ))
+            }
         };
 
         tokio::spawn(