diff --git a/src/EFCore.MySql/Query/ExpressionTranslators/Internal/MySqlJsonDbFunctionsTranslator.cs b/src/EFCore.MySql/Query/ExpressionTranslators/Internal/MySqlJsonDbFunctionsTranslator.cs
index 09ca9ef84..a29ed4ad7 100644
--- a/src/EFCore.MySql/Query/ExpressionTranslators/Internal/MySqlJsonDbFunctionsTranslator.cs
+++ b/src/EFCore.MySql/Query/ExpressionTranslators/Internal/MySqlJsonDbFunctionsTranslator.cs
@@ -145,13 +145,7 @@ public virtual SqlExpression Translate(
 
             return result;
 
-            SqlExpression Json(SqlExpression e) => _sqlExpressionFactory.ApplyTypeMapping(EnsureJson(e), _sqlExpressionFactory.FindMapping(e.Type, "json"));
-
-            static SqlExpression EnsureJson(SqlExpression e)
-                => e.TypeMapping is MySqlJsonTypeMapping ||
-                   e is MySqlJsonTraversalExpression
-                    ? e
-                    : throw new InvalidOperationException("The JSON method requires a JSON parameter but none was found.");
+            SqlExpression Json(SqlExpression e) => _sqlExpressionFactory.ApplyTypeMapping(e, _sqlExpressionFactory.FindMapping(e.Type, "json"));
 
             static SqlExpression RemoveConvert(SqlExpression e)
             {