diff --git a/crates/ecstore/src/bucket/sealed_credentials.rs b/crates/ecstore/src/bucket/sealed_credentials.rs
index 46a0f79fb..a5b264fc0 100644
--- a/crates/ecstore/src/bucket/sealed_credentials.rs
+++ b/crates/ecstore/src/bucket/sealed_credentials.rs
@@ -203,7 +203,7 @@ mod tests {
     use parking_lot::Mutex;
     use std::collections::BTreeMap;
 
-    fn encode_context(context: &HashMap<String, String>) -> String {
+    fn encode_context(context: &BTreeMap<String, String>) -> String {
         let ordered = context.iter().collect::<BTreeMap<_, _>>();
         serde_json::to_string(&ordered).expect("context serializes")
     }