diff --git a/collect_test.go b/collect_test.go
index 0015b69d..6a996afd 100644
--- a/collect_test.go
+++ b/collect_test.go
@@ -71,7 +71,8 @@ func TestCollectCount(t *testing.T) {
 		t.Errorf("Collect.Count returned %d, expected %d", cnt, expected)
 	}
 
-	cnt, err = client.Collect.Count(ListOptions{SinceId: 123})
+	sinceId := uint64(123)
+	cnt, err = client.Collect.Count(ListOptions{SinceId: &sinceId})
 	if err != nil {
 		t.Errorf("Collect.Count returned error: %v", err)
 	}
diff --git a/collection_test.go b/collection_test.go
index cb64ef16..fce07375 100644
--- a/collection_test.go
+++ b/collection_test.go
@@ -311,12 +311,13 @@ func TestListProductsWithPagination(t *testing.T) {
 		t.Errorf("Collection.ListProductsWithPagination returned %+v, expected %+v", products, expectedProducts)
 	}
 
+	sinceId := uint64(0)
 	expectedPage := &Pagination{
 		NextPageOptions: &ListOptions{
 			PageInfo:     "pageInfoCode",
 			Page:         0,
 			Limit:        1,
-			SinceId:      0,
+			SinceId:      &sinceId,
 			CreatedAtMin: time.Time{},
 			CreatedAtMax: time.Time{},
 			UpdatedAtMin: time.Time{},
diff --git a/goshopify.go b/goshopify.go
index 4ed927ea..1934c964 100644
--- a/goshopify.go
+++ b/goshopify.go
@@ -605,7 +605,7 @@ type ListOptions struct {
 	// It is the deprecated way to do pagination.
 	Page         int       `url:"page,omitempty"`
 	Limit        int       `url:"limit,omitempty"`
-	SinceId      uint64    `url:"since_id,omitempty"`
+	SinceId      *uint64   `url:"since_id,omitempty"`
 	CreatedAtMin time.Time `url:"created_at_min,omitempty"`
 	CreatedAtMax time.Time `url:"created_at_max,omitempty"`
 	UpdatedAtMin time.Time `url:"updated_at_min,omitempty"`