Index: trunk/src/org/openstreetmap/josm/data/imagery/vectortile/mapbox/style/MapboxVectorStyle.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/imagery/vectortile/mapbox/style/MapboxVectorStyle.java	(revision 18581)
+++ trunk/src/org/openstreetmap/josm/data/imagery/vectortile/mapbox/style/MapboxVectorStyle.java	(revision 18582)
@@ -25,4 +25,5 @@
 import javax.imageio.ImageIO;
 import javax.json.Json;
+import javax.json.JsonException;
 import javax.json.JsonObject;
 import javax.json.JsonReader;
@@ -188,5 +189,5 @@
             spriteObject = spriteJsonReader.read().asJsonObject();
             spritePngImage = ImageIO.read(spritePngBufferedReader);
-        } catch (IOException e) {
+        } catch (IOException | JsonException e) {
             Logging.error(e);
             return false;