diff --git a/largest-series-product/series_product.t b/largest-series-product/series_product.t
index b3c8041e..b9ad0a55 100644
--- a/largest-series-product/series_product.t
+++ b/largest-series-product/series_product.t
@@ -6,22 +6,15 @@ use Test::Exception;
 
 my $module = $ENV{EXERCISM} ? 'Example' : 'Series';
 
-plan tests => 13;
+plan tests => 14;
 
 ok -e "$module.pm", "Missing $module.pm"  or BAIL_OUT "You need to create file: $module.pm";
 
 eval "use $module";
 ok !$@, "Cannot load $module" or BAIL_OUT "Cannot load $module. Does it compile? Does it end with 1;?";
 can_ok $module, "new"    or BAIL_OUT "Missing package $module, or missing sub new()";
-can_ok $module, "slices" or BAIL_OUT "Missing package $module, or missing sub slices()";
 can_ok $module, "largest_product" or BAIL_OUT "Missing package $module, or missing sub largest_product()";
 
-is_deeply
-    $module->new('97867564')->slices(2),
-    [[9, 7], [7, 8], [8, 6], [6, 7], [7, 5], [5, 6], [6, 4]],
-    "test slices of two" or diag explain $module->new('97867564')->slices(2);
-
-throws_ok { $module->new('012')->slices(4) } qr/ArgumentError/, "slice length longer than digits legth throws exception";
 throws_ok { $module->new('012')->largest_product(4) } qr/ArgumentError/, "slice length longer than digits legth throws exception (largest_product)";
 
 is $module->new('0123456789')->largest_product(2), 72, "largest  product of 2";