diff --git a/vlib/builtin/array_test.v b/vlib/builtin/array_test.v
index 1b4a958c95..ecabd48e01 100644
--- a/vlib/builtin/array_test.v
+++ b/vlib/builtin/array_test.v
@@ -362,13 +362,45 @@ fn test_clone() {
 }
 
 fn test_mutli_array_clone() {
-	mut array1 := [[1, 2, 3], [4, 5, 6]]
-	mut array2 := array1.clone()
+    // 2d array_int
+    mut a2_1 := [[1, 2, 3], [4, 5, 6]]
+    mut a2_2 := a2_1.clone()
 
-	array1[0][1] = 0
+    a2_1[0][1] = 0
+    a2_2[1][0] = 0
 
-	assert array1 == [[1, 0, 3], [4, 5, 6]]
-	assert array2 == [[1, 2, 3], [4, 5, 6]]
+    assert a2_1 == [[1, 0, 3], [4, 5, 6]]
+    assert a2_2 == [[1, 2, 3], [0, 5, 6]]
+
+    // 2d array_string
+    mut b2_1 := [['1', '2', '3'], ['4', '5', '6']]
+    mut b2_2 := b2_1.clone()
+
+    b2_1[0][1] = '0'
+    b2_2[1][0] = '0'
+
+    assert b2_1 == [['1', '0', '3'], ['4', '5', '6']]
+    assert b2_2 == [['1', '2', '3'], ['0', '5', '6']]
+
+    // 3d array_int
+    mut a3_1 := [[[1,1], [2,2], [3,3]], [[4,4], [5,5], [6,6]]]
+    mut a3_2 := a3_1.clone()
+
+    a3_1[0][0][1] = 0
+    a3_2[0][1][0] = 0
+
+    assert a3_1 == [[[1, 0], [2, 2], [3, 3]], [[4, 4], [5, 5], [6, 6]]]
+    assert a3_2 == [[[1, 1], [0, 2], [3, 3]], [[4, 4], [5, 5], [6, 6]]]
+
+    // 3d array_string
+    mut b3_1 := [[['1','1'], ['2','2'], ['3','3']], [['4','4'], ['5','5'], ['6','6']]]
+    mut b3_2 := b3_1.clone()
+
+    b3_1[0][0][1] = '0'
+    b3_2[0][1][0] = '0'
+
+    assert b3_1 == [[['1','0'], ['2','2'], ['3','3']], [['4','4'], ['5','5'], ['6','6']]]
+    assert b3_2 == [[['1','1'], ['0','2'], ['3','3']], [['4','4'], ['5','5'], ['6','6']]]
 }
 
 fn test_doubling() {