diff --git a/backend/windmill-common/src/flows.rs b/backend/windmill-common/src/flows.rs
index 3b0cd1d5b3..574f9be0e6 100644
--- a/backend/windmill-common/src/flows.rs
+++ b/backend/windmill-common/src/flows.rs
@@ -12,7 +12,6 @@ use std::{
 };
 
 use serde::{self, Deserialize, Serialize, Serializer};
-use serde_json::value::RawValue;
 
 use crate::{
     more_serde::{
@@ -176,7 +175,7 @@ pub struct Suspend {
 pub struct Mock {
     pub enabled: bool,
     #[serde(skip_serializing_if = "Option::is_none")]
-    pub return_value: Option<Box<RawValue>>,
+    pub return_value: Option<serde_json::Value>,
 }
 
 #[derive(Deserialize, Serialize, Debug, Clone)]
diff --git a/backend/windmill-worker/src/worker_flow.rs b/backend/windmill-worker/src/worker_flow.rs
index 79e4658d15..2eee08e3f3 100644
--- a/backend/windmill-worker/src/worker_flow.rs
+++ b/backend/windmill-worker/src/worker_flow.rs
@@ -1448,13 +1448,15 @@ async fn push_next_flow_job<R: rsmq_async::RsmqConnection + Send + Sync + Clone>
         let mut hm = HashMap::new();
         hm.insert(
             "previous_result".to_string(),
-            module
-                .mock
-                .as_ref()
-                .unwrap()
-                .return_value
-                .clone()
-                .unwrap_or_else(|| serde_json::from_str("null").unwrap()),
+            to_raw_value(
+                &module
+                    .mock
+                    .as_ref()
+                    .unwrap()
+                    .return_value
+                    .clone()
+                    .unwrap_or_else(|| serde_json::from_str("null").unwrap()),
+            ),
         );
         Ok(hm)
     } else if let Some(id) = get_args_from_id {