diff --git a/src/main/java/de/thm/arsnova/config/ExtraConfig.java b/src/main/java/de/thm/arsnova/config/ExtraConfig.java
index e37d28ed49a21e562cda22c90a96f6776a0cf44a..367a29e564a3de6097345c5ab62a5eb3516f9347 100644
--- a/src/main/java/de/thm/arsnova/config/ExtraConfig.java
+++ b/src/main/java/de/thm/arsnova/config/ExtraConfig.java
@@ -42,7 +42,6 @@ import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter
 
 
 import java.util.Arrays;
-import java.util.Collections;
 
 /**
  * Loads property file and configures non-security related beans and components.