diff --git a/datafusion/physical-expr/src/scalar_function.rs b/datafusion/physical-expr/src/scalar_function.rs
index eaf1e061563b0..e185cca75269c 100644
--- a/datafusion/physical-expr/src/scalar_function.rs
+++ b/datafusion/physical-expr/src/scalar_function.rs
@@ -203,13 +203,12 @@ impl Hash for ScalarFunctionExpr {
             name,
             args,
             return_field,
-            config_options,
+            config_options: _, // expensive to hash, and often equal
         } = self;
         fun.hash(state);
         name.hash(state);
         args.hash(state);
         return_field.hash(state);
-        sorted_config_entries(config_options).hash(state);
     }
 }