diff --git a/xapi-model/src/main/java/dev/learning/xapi/model/Statement.java b/xapi-model/src/main/java/dev/learning/xapi/model/Statement.java
index d07688c1..691c9dbd 100644
--- a/xapi-model/src/main/java/dev/learning/xapi/model/Statement.java
+++ b/xapi-model/src/main/java/dev/learning/xapi/model/Statement.java
@@ -131,7 +131,7 @@ public Statement signAndBuild(PrivateKey privateKey) {
                     .length(token.length())
                     .contentType("application/octet-stream"));
 
-      } catch (final UnknownClassException e) {
+      } catch (final UnknownClassException | ExceptionInInitializerError e) {
         throw new IllegalStateException(
             """