diff --git a/sqlx-core/src/types/json.rs b/sqlx-core/src/types/json.rs
index f9d95c9b01..2cff5e149b 100644
--- a/sqlx-core/src/types/json.rs
+++ b/sqlx-core/src/types/json.rs
@@ -196,20 +196,6 @@ where
     }
 }
 
-impl<DB> Type<DB> for Box<JsonRawValue>
-where
-    for<'a> Json<&'a Self>: Type<DB>,
-    DB: Database,
-{
-    fn type_info() -> DB::TypeInfo {
-        <Json<&Self> as Type<DB>>::type_info()
-    }
-
-    fn compatible(ty: &DB::TypeInfo) -> bool {
-        <Json<&Self> as Type<DB>>::compatible(ty)
-    }
-}
-
 impl<'q, DB> Encode<'q, DB> for JsonRawValue
 where
     for<'a> Json<&'a Self>: Encode<'q, DB>,
diff --git a/tests/postgres/derives.rs b/tests/postgres/derives.rs
index 350bb04089..96687e3113 100644
--- a/tests/postgres/derives.rs
+++ b/tests/postgres/derives.rs
@@ -818,7 +818,7 @@ async fn test_custom_pg_array() -> anyhow::Result<()> {
 
     impl PgHasArrayType for User {
         fn array_type_info() -> sqlx::postgres::PgTypeInfo {
-            sqlx::postgres::PgTypeInfo::array_of("Gebruiker")
+            sqlx::postgres::PgTypeInfo::array_of("User")
         }
     }
     Ok(())
diff --git a/tests/postgres/setup.sql b/tests/postgres/setup.sql
index 65487b8ae5..49b7fcfeea 100644
--- a/tests/postgres/setup.sql
+++ b/tests/postgres/setup.sql
@@ -69,7 +69,7 @@ CREATE TABLE circles (
     EXCLUDE USING gist (c WITH &&)
 );
 
-CREATE DOMAIN positive_int AS integer CHECK (VALUE >= 0);
+CREATE DOMAIN positive_int AS integer CHECK (VALUE > 0);
 CREATE DOMAIN percentage AS positive_int CHECK (VALUE <= 100);
 
 CREATE TYPE person as (