diff --git a/src/main/java/eu/siacs/conversations/entities/Conversation.java b/src/main/java/eu/siacs/conversations/entities/Conversation.java
index 64185aca74aa9319f6787f822416c8e04d8f92f5..b9ae5f10441b983c79ea9a0cacaf4c342ce16d42 100644
--- a/src/main/java/eu/siacs/conversations/entities/Conversation.java
+++ b/src/main/java/eu/siacs/conversations/entities/Conversation.java
@@ -1396,7 +1396,7 @@ public class Conversation extends AbstractEntity implements Blockable, Comparabl
         final var script = locale.getScript();
         for (final var m : messages) {
             if (getMode() != MODE_MULTI) {
-                final var resource = m.getCounterpart().getResource();
+                final var resource = m.getCounterpart() == null ? null : m.getCounterpart().getResource();
                 if (resource != null && resource.length() < 10) {
                     anyMatchSpam = true;
                     return;