diff --git a/build.gradle b/build.gradle
index 3baa97c..6e417cf 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,7 +8,7 @@ plugins {
 }
 
 group = 'de.jottyfan.bico'
-version = '0.2.2'
+version = '0.2.3'
 
 description = """BibleClassOrganizer"""
 
diff --git a/src/main/java/de/jottyfan/bico/modules/CommonController.java b/src/main/java/de/jottyfan/bico/modules/CommonController.java
index 80fd37a..8636cef 100644
--- a/src/main/java/de/jottyfan/bico/modules/CommonController.java
+++ b/src/main/java/de/jottyfan/bico/modules/CommonController.java
@@ -29,7 +29,7 @@ public abstract class CommonController {
 
 	@ModelAttribute("isCampAdmin")
 	public Boolean isCampAdmin(Principal principal) {
-		return admins.contains(principal.getName());
+		return principal == null ? false : admins.contains(principal.getName());
 	}
 
 	@ModelAttribute("hasBUrole")