diff --git a/perun-wui-registrar/src/main/java/cz/metacentrum/perun/wui/registrar/widgets/items/validators/ValidatedEmailValidator.java b/perun-wui-registrar/src/main/java/cz/metacentrum/perun/wui/registrar/widgets/items/validators/ValidatedEmailValidator.java
index a00ce159..8c9d2dea 100644
--- a/perun-wui-registrar/src/main/java/cz/metacentrum/perun/wui/registrar/widgets/items/validators/ValidatedEmailValidator.java
+++ b/perun-wui-registrar/src/main/java/cz/metacentrum/perun/wui/registrar/widgets/items/validators/ValidatedEmailValidator.java
@@ -44,7 +44,10 @@ public boolean validateLocal(ValidatedEmail mail) {
 		// check which mails can be really trusted
 		ArrayList<String> validMails = new ArrayList<>();
 		List<String> prefilledMails = new ArrayList<>();
-		prefilledMails.addAll(Arrays.asList(mail.getItemData().getPrefilledValue().split(";")));
+
+		if (mail.getItemData().getPrefilledValue() != null) {
+			prefilledMails.addAll(Arrays.asList(mail.getItemData().getPrefilledValue().split(";")));
+		}
 
 		// we do this, since we can't tell, if mail was pre-filled from federation or perun
 		// by removing all fed values we can be sure, that value from perun will remain as trusted