diff --git a/extensions/kafka-client/runtime/src/main/java/io/quarkus/kafka/client/runtime/KafkaRuntimeConfigProducer.java b/extensions/kafka-client/runtime/src/main/java/io/quarkus/kafka/client/runtime/KafkaRuntimeConfigProducer.java
index 61ddbfde3ce30..1bedf2d4dcc6b 100644
--- a/extensions/kafka-client/runtime/src/main/java/io/quarkus/kafka/client/runtime/KafkaRuntimeConfigProducer.java
+++ b/extensions/kafka-client/runtime/src/main/java/io/quarkus/kafka/client/runtime/KafkaRuntimeConfigProducer.java
@@ -38,7 +38,7 @@ public Map<String, Object> createKafkaRuntimeConfig(Config config, ApplicationCo
             result.put(effectivePropertyName, value);
         }
 
-        if (!result.containsKey(GROUP_ID) && app.name.isPresent()) {
+        if (!result.isEmpty() && !result.containsKey(GROUP_ID) && app.name.isPresent()) {
             result.put(GROUP_ID, app.name.get());
         }