diff --git a/filter.go b/filter.go
index 265993f..024e599 100644
--- a/filter.go
+++ b/filter.go
@@ -18,8 +18,8 @@ type Filter struct {
 	Description      string  `json:"description"`
 	HiddenTagIds     []int64 `json:"hidden_tag_ids"`
 	SpoileredTagIds  []int64 `json:"spoilered_tag_ids"`
-	SpoileredTags    string  `json:"spoilered_tags"`
-	HiddenTags       string  `json:"hidden_tags"`
+	SpoileredTags    []string  `json:"spoilered_tags"`
+	HiddenTags       []string  `json:"hidden_tags"`
 	HiddenComplex    string  `json:"hidden_complex"`
 	SpoileredComplex string  `json:"spoilered_complex"`
 	Public           bool    `json:"public"`
diff --git a/image.go b/image.go
index 329682a..7d91610 100644
--- a/image.go
+++ b/image.go
@@ -29,7 +29,7 @@ type Image struct {
 	Faves            int                `json:"faves"`
 	CommentCount     int                `json:"comment_count"`
 	Tags             string             `json:"tags"`
-	TagIds           []string           `json:"tag_ids"`
+	TagIds           []int64           `json:"tag_ids"`
 	Width            int                `json:"width"`
 	Height           int                `json:"height"`
 	AspectRatio      float64            `json:"aspect_ratio"`
diff --git a/image_test.go b/image_test.go
index ec650eb..af4a34e 100644
--- a/image_test.go
+++ b/image_test.go
@@ -6,14 +6,13 @@ func TestGetImage(t *testing.T) {
 	ctx, myC := setup()
 
 	const imageID = 912673 // https://derpibooru.org/912673
-	const imageIDStr = "912673"
 
 	i, _, err := myC.GetImage(ctx, imageID)
 	if err != nil {
 		t.Fatal(err)
 	}
 
-	if i.ID != imageIDStr {
-		t.Fatalf("ID is wrong: expected %v, got %s", imageID, i.ID)
+	if i.ID != imageID {
+		t.Fatalf("ID is wrong: expected %v, got %d", imageID, i.ID)
 	}
 }
diff --git a/user_test.go b/user_test.go
index df08e7f..613074e 100644
--- a/user_test.go
+++ b/user_test.go
@@ -5,7 +5,7 @@ import "testing"
 func TestGetUserInformation(t *testing.T) {
 	ctx, myC := setup()
 
-	const username = "Xena" // https://derpibooru.org/profiles/Xena - Creator of this library
+	const username = "Carcer" // https://derpibooru.org/profiles/Carcer - one of the admins
 
 	u, err := myC.GetUser(ctx, username)
 	if err != nil {