diff --git a/sqlx-macros/src/database/mysql.rs b/sqlx-macros/src/database/mysql.rs
index 69eb29bc..0ef49fa7 100644
--- a/sqlx-macros/src/database/mysql.rs
+++ b/sqlx-macros/src/database/mysql.rs
@@ -52,9 +52,6 @@ impl_database_ext! {
 
         #[cfg(feature = "json")]
         serde_json::Value,
-
-        #[cfg(feature = "json")]
-        sqlx::types::Json<_>,
     },
     ParamChecking::Weak,
     feature-types: info => info.__type_feature_gate(),