diff --git a/quaint/src/connector/mysql/error.rs b/quaint/src/connector/mysql/error.rs
index 615f0c69dda4..7b4813bf0223 100644
--- a/quaint/src/connector/mysql/error.rs
+++ b/quaint/src/connector/mysql/error.rs
@@ -1,6 +1,8 @@
 use crate::error::{DatabaseConstraint, Error, ErrorKind};
 use thiserror::Error;
 
+// This is a partial copy of the `mysql_async::Error` using only the enum variant used by Prisma.
+// This avoids pulling in `mysql_async`, which would break Wasm compilation.
 #[derive(Debug, Error)]
 enum MysqlAsyncError {
     #[error("Server error: `{}'", _0)]