diff --git a/sqlx-mysql/src/query_result.rs b/sqlx-mysql/src/query_result.rs
index adbb0df224..17affdf7b5 100644
--- a/sqlx-mysql/src/query_result.rs
+++ b/sqlx-mysql/src/query_result.rs
@@ -30,7 +30,7 @@ impl From<MySqlQueryResult> for crate::any::AnyQueryResult {
     fn from(done: MySqlQueryResult) -> Self {
         crate::any::AnyQueryResult {
             rows_affected: done.rows_affected,
-            last_insert_id: Some(done.last_insert_id),
+            last_insert_id: Some(done.last_insert_id.try_into().unwrap()),
         }
     }
 }