1 files changed, 3 insertions, 0 deletions
diff --git a/fpdf.go b/fpdf.go
index d735269..9818aeb 100644
--- a/fpdf.go
+++ b/fpdf.go
@@ -358,6 +358,9 @@ func (f *Fpdf) SetPageBox(t string, pb PageBox) {
 		fallthrough
 	case "artbox":
 		t = "ArtBox"
+	default:
+		f.err = fmt.Sprintf("%s is not a valid page box type")
+		return
 	}
 
 	pb.X = pb.X * f.k