diff --git a/src/main/java/de/dpunkt/myaktion/model/Organizer.java b/src/main/java/de/dpunkt/myaktion/model/Organizer.java
index c0cbbc664937d0b8abbb5dbb45e5014c38ff8dd2..b78aea4f38f725b5db9a19f0ad13a19b9a348f5e 100644
--- a/src/main/java/de/dpunkt/myaktion/model/Organizer.java
+++ b/src/main/java/de/dpunkt/myaktion/model/Organizer.java
@@ -1,5 +1,6 @@
 package de.dpunkt.myaktion.model;
 
+import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
 import javax.persistence.Id;
@@ -35,6 +36,7 @@ public class Organizer extends DateEntity {
     private String lastName;
 
     @Pattern(regexp = ".+@.+", message = "{organizer.email.pattern}")
+    @Column(unique = true)
     private String email;
 
     @NotNull