diff --git a/appointment-import/src/main/java/smash/appointment/parse/Subject.java b/appointment-import/src/main/java/smash/appointment/parse/Subject.java
index 61ef020b26569c680433a5ebb8702f04ef470cb6..798dcdc172dc51d8aa4a831e9ef9c5aca109204c 100644
--- a/appointment-import/src/main/java/smash/appointment/parse/Subject.java
+++ b/appointment-import/src/main/java/smash/appointment/parse/Subject.java
@@ -230,7 +230,7 @@ public class Subject {
 	public void setZipCode(String zipCode) {
 		if (zipCode != null && zipCode.length() > 7) {
 			logger.warn("Surname too long. Ignoring: " + zipCode);
-			zipCode = zipCode.substring(0, 7);
+			this.zipCode = "";
 		} else {
 			this.zipCode = zipCode;
 		}