diff --git a/extensions/kafka-client/deployment/src/main/java/io/quarkus/kafka/client/deployment/DevServicesKafkaProcessor.java b/extensions/kafka-client/deployment/src/main/java/io/quarkus/kafka/client/deployment/DevServicesKafkaProcessor.java
index 34415afe512c0..25d1eb9a06cc7 100644
--- a/extensions/kafka-client/deployment/src/main/java/io/quarkus/kafka/client/deployment/DevServicesKafkaProcessor.java
+++ b/extensions/kafka-client/deployment/src/main/java/io/quarkus/kafka/client/deployment/DevServicesKafkaProcessor.java
@@ -325,7 +325,7 @@ private static final class RedPandaKafkaContainer extends GenericContainer<RedPa
 
         private String hostName = null;
 
-        private static final String STARTER_SCRIPT = "/redpanda.sh";
+        private static final String STARTER_SCRIPT = "/var/lib/redpanda/redpanda.sh";
 
         private RedPandaKafkaContainer(DockerImageName dockerImageName, int fixedExposedPort, String serviceName,
                 boolean useSharedNetwork) {
@@ -360,7 +360,7 @@ protected void containerIsStarting(InspectContainerResponse containerInfo, boole
 
             // Start and configure the advertised address
             String command = "#!/bin/bash\n";
-            command += "/usr/bin/rpk redpanda start --check=false --node-id 0 ";
+            command += "/usr/bin/rpk redpanda start --check=false --node-id 0 --smp 1 ";
             command += "--kafka-addr PLAINTEXT://0.0.0.0:29092,OUTSIDE://0.0.0.0:9092 ";
             command += String.format("--advertise-kafka-addr PLAINTEXT://%s:29092,OUTSIDE://%s:%d", getHostToUse(),
                     getHostToUse(), getPortToUse());