diff --git a/crates/matrix-sdk-crypto/src/file_encryption/attachments.rs b/crates/matrix-sdk-crypto/src/file_encryption/attachments.rs
index 1e54d84c0..5447fcc09 100644
--- a/crates/matrix-sdk-crypto/src/file_encryption/attachments.rs
+++ b/crates/matrix-sdk-crypto/src/file_encryption/attachments.rs
@@ -313,7 +313,7 @@ mod tests {
     fn example_key() -> MediaEncryptionInfo {
         let info = json!({
             "v": "v2",
-            "web_key": {
+            "key": {
                 "kty": "oct",
                 "alg": "A256CTR",
                 "ext": true,