1 files changed, 3 insertions, 1 deletions
diff --git a/src/main/java/com/juick/server/xmpp/JidConverter.java b/src/main/java/com/juick/server/xmpp/JidConverter.java
index e9a9707e..96c9ca74 100644
--- a/src/main/java/com/juick/server/xmpp/JidConverter.java
+++ b/src/main/java/com/juick/server/xmpp/JidConverter.java
@@ -4,10 +4,12 @@ import org.springframework.core.convert.converter.Converter;
 import org.springframework.lang.Nullable;
 import rocks.xmpp.addr.Jid;
 
+import javax.annotation.Nonnull;
+
 public class JidConverter implements Converter<String, Jid> {
     @Nullable
     @Override
-    public Jid convert(String jidStr) {
+    public Jid convert(@Nonnull String jidStr) {
         return Jid.of(jidStr);
     }
 }