diff --git a/graalvm-config-dir/reflect-config.json b/graalvm-config-dir/reflect-config.json
index 62612d44..2c2c94f9 100644
--- a/graalvm-config-dir/reflect-config.json
+++ b/graalvm-config-dir/reflect-config.json
@@ -2135,6 +2135,13 @@
   "name":"org.whispersystems.signalservice.api.push.SignedPreKeyEntity$ByteArraySerializer",
   "methods":[{"name":"<init>","parameterTypes":[] }]
 },
+{
+  "name":"org.whispersystems.signalservice.api.push.exceptions.NonNormalizedPhoneNumberException$JsonResponse",
+  "allDeclaredFields":true,
+  "queryAllDeclaredMethods":true,
+  "queryAllDeclaredConstructors":true,
+  "methods":[{"name":"<init>","parameterTypes":[] }]
+},
 {
   "name":"org.whispersystems.signalservice.api.storage.StorageAuthResponse",
   "allDeclaredFields":true,
diff --git a/src/main/java/org/asamk/signal/commands/RegisterCommand.java b/src/main/java/org/asamk/signal/commands/RegisterCommand.java
index 4415bb18..84287877 100644
--- a/src/main/java/org/asamk/signal/commands/RegisterCommand.java
+++ b/src/main/java/org/asamk/signal/commands/RegisterCommand.java
@@ -80,7 +80,7 @@ public class RegisterCommand implements RegistrationCommand, JsonRpcRegistration
         } catch (NonNormalizedPhoneNumberException e) {
             throw new UserErrorException("Failed to register: " + e.getMessage(), e);
         } catch (IOException e) {
-            throw new IOErrorException("Request verify error: " + e.getMessage(), e);
+            throw new IOErrorException("Failed to register: " + e.getMessage(), e);
         }
     }