diff --git a/compare/deep/deep.test.tsx b/compare/deep/deep.test.tsx
index a4b89bd1302..10c2555bf64 100644
--- a/compare/deep/deep.test.tsx
+++ b/compare/deep/deep.test.tsx
@@ -35,10 +35,16 @@ namespace $ {
 		} ,
 
 		'Array'() {
+			
 			$mol_assert_ok( $mol_compare_deep( [] , [] ) )
 			$mol_assert_ok( $mol_compare_deep( [ 1 , [2] ] , [ 1 , [2] ] ) )
+			
 			$mol_assert_not( $mol_compare_deep( [ 1 , 2 ] , [ 1 , 3 ] ) )
 			$mol_assert_not( $mol_compare_deep( [ 1 , 2 , ] , [ 1 , 3 , undefined ] ) )
+			
+			$mol_assert_not( $mol_compare_deep( $mol_range2().slice(0,0), new Array() ) )
+			$mol_assert_not( $mol_compare_deep( $mol_range2(), $mol_range2() ) )
+			
 		} ,
 
 		'Non POJO are different'() {
diff --git a/compare/deep/deep.ts b/compare/deep/deep.ts
index 91830cd72cd..86ced8bf81b 100644
--- a/compare/deep/deep.ts
+++ b/compare/deep/deep.ts
@@ -47,12 +47,12 @@ namespace $ {
 			
 			if( !left_proto ) result = compare_pojo( left, right as any )
 			else if( !Reflect.getPrototypeOf( left_proto ) ) result = compare_pojo( left, right as any )
+			else if( Symbol.toPrimitive in left ) result = compare_primitive( left, right )
 			else if( Array.isArray( left ) ) result = compare_array( left, right as any )
 			else if( left instanceof Set ) result = compare_set( left, right as any )
 			else if( left instanceof Map ) result = compare_map( left, right as any )
 			else if( ArrayBuffer.isView( left ) ) result = compare_buffer( left, right as any )
 			else if( Symbol.iterator in left ) result = compare_iterator( ( left as any )[ Symbol.iterator ](), ( right as any )[ Symbol.iterator ]() )
-			else if( Symbol.toPrimitive in left ) result = compare_primitive( left, right )
 			else result = false
 
 		} finally {
diff --git a/range2/range2.ts b/range2/range2.ts
index a5ee5cfbf1b..9688436b605 100644
--- a/range2/range2.ts
+++ b/range2/range2.ts
@@ -166,6 +166,10 @@ namespace $ {
 		sort() {
 			return $mol_fail( new TypeError( `Mutable sort is forbidden. Use toSorted instead.`  ) )
 		}
+		
+		[Symbol.toPrimitive]() {
+			return $mol_guid()
+		}
 
 	}