diff --git a/ozgcloud-common-lib/src/main/java/de/ozgcloud/common/binaryfile/GrpcFileUploadUtils.java b/ozgcloud-common-lib/src/main/java/de/ozgcloud/common/binaryfile/GrpcFileUploadUtils.java
index 783d96534ee1cddc338dfb13b114fe1ca2544e33..1cbd50d5e2368639f27448c8f61ba7a47740ecd8 100644
--- a/ozgcloud-common-lib/src/main/java/de/ozgcloud/common/binaryfile/GrpcFileUploadUtils.java
+++ b/ozgcloud-common-lib/src/main/java/de/ozgcloud/common/binaryfile/GrpcFileUploadUtils.java
@@ -152,7 +152,7 @@ public class GrpcFileUploadUtils {
 
 		}
 
-		long sendNextChunk() {
+		void sendNextChunk() {
 			byte[] contentToSend = streamReader.getNextData();
 
 			if (streamReader.getLastReadSize() > 0) {
@@ -160,7 +160,6 @@ public class GrpcFileUploadUtils {
 			} else {
 				endTransfer();
 			}
-			return contentToSend.length;
 		}
 
 		private void endTransfer() {
diff --git a/ozgcloud-common-lib/src/test/java/de/ozgcloud/common/binaryfile/GrpcFileUploadUtilsTest.java b/ozgcloud-common-lib/src/test/java/de/ozgcloud/common/binaryfile/GrpcFileUploadUtilsTest.java
index 6a011836cdeec453074e51e70fea473c3d1c089e..fb77f3ca04c0554238b03cff1f996028d4ae29f6 100644
--- a/ozgcloud-common-lib/src/test/java/de/ozgcloud/common/binaryfile/GrpcFileUploadUtilsTest.java
+++ b/ozgcloud-common-lib/src/test/java/de/ozgcloud/common/binaryfile/GrpcFileUploadUtilsTest.java
@@ -149,13 +149,6 @@ class GrpcFileUploadUtilsTest {
 				verify(fileSender).sendChunk(chunkCaptor.capture(), eq(content.length));
 				assertThat(chunkCaptor.getValue()).contains(content);
 			}
-
-			@Test
-			void shouldReturnChunkSize() {
-				var cotnentLength = fileSender.sendNextChunk();
-
-				assertThat(cotnentLength).isEqualTo(GrpcFileUploadUtils.CHUNK_SIZE);
-			}
 		}
 
 		@Nested
@@ -175,7 +168,6 @@ class GrpcFileUploadUtilsTest {
 
 				@Test
 				void shouldCallOnCompleted() {
-
 					fileSender.sendNextChunk();
 
 					verify(requestObserver).onCompleted();
@@ -211,7 +203,6 @@ class GrpcFileUploadUtilsTest {
 
 				@Test
 				void shouldNotCallOnCompleted() {
-
 					fileSender.sendNextChunk();
 
 					verify(requestObserver, never()).onCompleted();