diff --git a/src/main/java/eu/siacs/conversations/xmpp/jid/InvalidJidException.java b/src/main/java/eu/siacs/conversations/xmpp/jid/InvalidJidException.java
index f1855263..164e8849 100644
--- a/src/main/java/eu/siacs/conversations/xmpp/jid/InvalidJidException.java
+++ b/src/main/java/eu/siacs/conversations/xmpp/jid/InvalidJidException.java
@@ -8,6 +8,7 @@ public class InvalidJidException extends Exception {
     public final static String INVALID_PART_LENGTH = "JID part must be between 0 and 1023 characters";
     public final static String INVALID_CHARACTER = "JID contains an invalid character";
     public final static String STRINGPREP_FAIL = "The STRINGPREP operation has failed for the given JID";
+	public final static String IS_NULL = "JID can not be NULL";
 
     /**
      * Constructs a new {@code Exception} that includes the current stack trace.
diff --git a/src/main/java/eu/siacs/conversations/xmpp/jid/Jid.java b/src/main/java/eu/siacs/conversations/xmpp/jid/Jid.java
index a35ea37c..b8be527b 100644
--- a/src/main/java/eu/siacs/conversations/xmpp/jid/Jid.java
+++ b/src/main/java/eu/siacs/conversations/xmpp/jid/Jid.java
@@ -60,6 +60,8 @@ public final class Jid {
 	}
 
 	private Jid(final String jid) throws InvalidJidException {
+		if (jid == null) throw new InvalidJidException(InvalidJidException.IS_NULL);
+
 		// Hackish Android way to count the number of chars in a string... should work everywhere.
 		final int atCount = jid.length() - jid.replace("@", "").length();
 		final int slashCount = jid.length() - jid.replace("/", "").length();