diff --git a/checkstyle/import-control.xml b/checkstyle/import-control.xml
index 7b748eca56f..db1ef7fdbb7 100644
--- a/checkstyle/import-control.xml
+++ b/checkstyle/import-control.xml
@@ -108,6 +108,7 @@
 			<allow pkg="org.apache.kafka.clients.consumer" />
             <allow pkg="com.fasterxml.jackson" />
             <allow pkg="net.sourceforge.argparse4j" />
+			<allow pkg="org.apache.log4j" />
 		</subpackage>
 	</subpackage>
 
diff --git a/tools/src/main/java/org/apache/kafka/clients/tools/VerifiableLog4jAppender.java b/tools/src/main/java/org/apache/kafka/clients/tools/VerifiableLog4jAppender.java
index e78f96aa5fe..bf289b72954 100644
--- a/tools/src/main/java/org/apache/kafka/clients/tools/VerifiableLog4jAppender.java
+++ b/tools/src/main/java/org/apache/kafka/clients/tools/VerifiableLog4jAppender.java
@@ -147,7 +147,7 @@ public class VerifiableLog4jAppender {
             }
         });
 
-        long maxMessages = infinite ? Long.MAX_VALUE: appender.maxMessages;
+        long maxMessages = infinite ? Long.MAX_VALUE : appender.maxMessages;
         for (long i = 0; i < maxMessages; i++) {
             if (appender.stopLogging) {
                 break;
diff --git a/tools/src/main/java/org/apache/kafka/clients/tools/VerifiableProducer.java b/tools/src/main/java/org/apache/kafka/clients/tools/VerifiableProducer.java
index b195093ba3c..b0e19fc4f46 100644
--- a/tools/src/main/java/org/apache/kafka/clients/tools/VerifiableProducer.java
+++ b/tools/src/main/java/org/apache/kafka/clients/tools/VerifiableProducer.java
@@ -291,7 +291,7 @@ public class VerifiableProducer {
         });
 
         ThroughputThrottler throttler = new ThroughputThrottler(producer.throughput, startMs);
-        long maxMessages = infinite ? Long.MAX_VALUE: producer.maxMessages;
+        long maxMessages = infinite ? Long.MAX_VALUE : producer.maxMessages;
         for (long i = 0; i < maxMessages; i++) {
             if (producer.stopProducing) {
                 break;