diff --git a/src/main/java/io/jenkins/plugins/cdevents/CDEventsGlobalConfig.java b/src/main/java/io/jenkins/plugins/cdevents/CDEventsGlobalConfig.java
index 8b5b241..e587c38 100644
--- a/src/main/java/io/jenkins/plugins/cdevents/CDEventsGlobalConfig.java
+++ b/src/main/java/io/jenkins/plugins/cdevents/CDEventsGlobalConfig.java
@@ -37,7 +37,7 @@ public static CDEventsGlobalConfig get() {
     }
 
     private static boolean isNullOrEmpty(String str) {
-        return str == null || str.trim().isEmpty();
+        return str.isBlank();
     }
 
     public String getSinkType() {
diff --git a/src/main/java/io/jenkins/plugins/cdevents/sinks/KinesisSink.java b/src/main/java/io/jenkins/plugins/cdevents/sinks/KinesisSink.java
index 9d6368a..9147051 100644
--- a/src/main/java/io/jenkins/plugins/cdevents/sinks/KinesisSink.java
+++ b/src/main/java/io/jenkins/plugins/cdevents/sinks/KinesisSink.java
@@ -57,15 +57,15 @@ public static synchronized void rebuildKinesisClient() {
             String roleSessionName = "cdevents-plugin";
 
             AmazonKinesisClientBuilder kinesisBuilder = AmazonKinesisClientBuilder.standard();
-            if (region != null && !region.isEmpty()) {
+            if (!region.isBlank()) {
                 kinesisBuilder.withRegion(region);
             }
-            if (endpoint != null && !endpoint.isEmpty()) {
+            if (!endpoint.isBlank()) {
                 AwsClientBuilder.EndpointConfiguration endpointConfiguration = new AwsClientBuilder.EndpointConfiguration(
                         endpoint, region);
                 kinesisBuilder.withEndpointConfiguration(endpointConfiguration);
             }
-            if (iamRole != null && !iamRole.isEmpty()) {
+            if (!iamRole.isBlank()) {
                 STSAssumeRoleSessionCredentialsProvider credentialsProvider = new STSAssumeRoleSessionCredentialsProvider.Builder(
                         iamRole, roleSessionName).build();
                 kinesisBuilder.withCredentials(credentialsProvider);