diff --git a/kotlin/services/apigateway/src/test/kotlin/APIGatewayTest.kt b/kotlin/services/apigateway/src/test/kotlin/APIGatewayTest.kt
index 8c7c702d7eb..f5908bf0235 100644
--- a/kotlin/services/apigateway/src/test/kotlin/APIGatewayTest.kt
+++ b/kotlin/services/apigateway/src/test/kotlin/APIGatewayTest.kt
@@ -84,7 +84,7 @@ class APIGatewayTest {
 
     @Test
     @Order(4)
-    fun DeleteRestApi() = runBlocking {
+    fun deleteRestApi() = runBlocking {
         deleteAPI(newApiId)
         println("Test 6 passed")
     }
diff --git a/kotlin/usecases/creating_photo_analyzer_app/src/main/kotlin/com/aws/photo/AnalyzePhotos.kt b/kotlin/usecases/creating_photo_analyzer_app/src/main/kotlin/com/aws/photo/AnalyzePhotos.kt
index eba674e499c..944306d7563 100644
--- a/kotlin/usecases/creating_photo_analyzer_app/src/main/kotlin/com/aws/photo/AnalyzePhotos.kt
+++ b/kotlin/usecases/creating_photo_analyzer_app/src/main/kotlin/com/aws/photo/AnalyzePhotos.kt
@@ -11,7 +11,7 @@ import org.springframework.stereotype.Component
 @Component
 class AnalyzePhotos {
 
-    suspend fun DetectLabels(bytesVal: ByteArray?, key: String?): MutableList<WorkItem>? {
+    suspend fun detectLabels(bytesVal: ByteArray?, key: String?): MutableList<WorkItem>? {
         // Create an Image object for the source image.
         val souImage = Image {
             bytes = bytesVal
diff --git a/kotlin/usecases/creating_photo_analyzer_app/src/main/kotlin/com/aws/photo/PhotoApp.kt b/kotlin/usecases/creating_photo_analyzer_app/src/main/kotlin/com/aws/photo/PhotoApp.kt
index 32b2f5c7487..b993c3ce63b 100644
--- a/kotlin/usecases/creating_photo_analyzer_app/src/main/kotlin/com/aws/photo/PhotoApp.kt
+++ b/kotlin/usecases/creating_photo_analyzer_app/src/main/kotlin/com/aws/photo/PhotoApp.kt
@@ -54,7 +54,7 @@ class MessageResource {
     @RequestMapping(value = ["/getimages"], method = [RequestMethod.GET])
     @ResponseBody
     fun getImages(request: HttpServletRequest?, response: HttpServletResponse?): String? = runBlocking {
-        return@runBlocking s3Service?.ListAllObjects(bucketName)
+        return@runBlocking s3Service?.listAllObjects(bucketName)
     }
 
     // Generates a report that analyzes photos in a given bucket.
@@ -72,7 +72,7 @@ class MessageResource {
             val keyData = s3Service?.getObjectBytes(bucketName, key)
 
             // Analyze the photo.
-            val item = recService?.DetectLabels(keyData, key)
+            val item = recService?.detectLabels(keyData, key)
             if (item != null) {
                 myList.add(item)
             }
diff --git a/kotlin/usecases/creating_photo_analyzer_app/src/main/kotlin/com/aws/photo/S3Service.kt b/kotlin/usecases/creating_photo_analyzer_app/src/main/kotlin/com/aws/photo/S3Service.kt
index 3b13fa25025..29d67cb020d 100644
--- a/kotlin/usecases/creating_photo_analyzer_app/src/main/kotlin/com/aws/photo/S3Service.kt
+++ b/kotlin/usecases/creating_photo_analyzer_app/src/main/kotlin/com/aws/photo/S3Service.kt
@@ -44,7 +44,7 @@ class S3Service {
     }
 
     // Returns the names of all images and data within an XML document.
-    suspend fun ListAllObjects(bucketName: String?): String? {
+    suspend fun listAllObjects(bucketName: String?): String? {
         var sizeLg: Long
         var dateIn: aws.smithy.kotlin.runtime.time.Instant?
         val bucketItems = mutableListOf<BucketItem>()
@@ -59,7 +59,7 @@ class S3Service {
                 val myItem = BucketItem()
                 myItem.key = myObject.key
                 myItem.owner = myObject.owner?.displayName.toString()
-                sizeLg = (myObject.size / 1024)
+                sizeLg = (myObject.size?.div(1024)!!)
                 myItem.size = (sizeLg.toString())
                 dateIn = myObject.lastModified
                 myItem.date = dateIn.toString()
diff --git a/kotlin/usecases/workflow_sagemaker_lambda/src/main/kotlin/org/example/QueuePayload.kt b/kotlin/usecases/workflow_sagemaker_lambda/src/main/kotlin/org/example/QueuePayload.kt
index 86a6074c7ff..94cb6f8a92c 100644
--- a/kotlin/usecases/workflow_sagemaker_lambda/src/main/kotlin/org/example/QueuePayload.kt
+++ b/kotlin/usecases/workflow_sagemaker_lambda/src/main/kotlin/org/example/QueuePayload.kt
@@ -16,5 +16,4 @@ class QueuePayload {
 
     // Getter and Setter methods for arguments
     fun getArguments(): HashMap<String?, String?>? = arguments
-
 }