diff --git a/spring-web/src/main/java/org/springframework/http/codec/multipart/Part.java b/spring-web/src/main/java/org/springframework/http/codec/multipart/Part.java
index e8bcc15d98..b47bc02206 100644
--- a/spring-web/src/main/java/org/springframework/http/codec/multipart/Part.java
+++ b/spring-web/src/main/java/org/springframework/http/codec/multipart/Part.java
@@ -73,10 +73,10 @@ public interface Part {
 
 	/**
 	 * Transfer the file in this part to the given file destination.
-	 * @param dest the target file
+	 * @param destination the target file
 	 * @return completion {@code Mono} with the result of the file transfer,
 	 * possibly {@link IllegalStateException} if the part isn't a file
 	 */
-	Mono<Void> transferTo(File dest);
+	Mono<Void> transferTo(File destination);
 
 }
diff --git a/spring-web/src/main/java/org/springframework/http/codec/multipart/SynchronossMultipartHttpMessageReader.java b/spring-web/src/main/java/org/springframework/http/codec/multipart/SynchronossMultipartHttpMessageReader.java
index 153574f86a..a94ebfcd01 100644
--- a/spring-web/src/main/java/org/springframework/http/codec/multipart/SynchronossMultipartHttpMessageReader.java
+++ b/spring-web/src/main/java/org/springframework/http/codec/multipart/SynchronossMultipartHttpMessageReader.java
@@ -66,6 +66,7 @@ import org.springframework.util.StreamUtils;
  *
  * @author Sebastien Deleuze
  * @author Rossen Stoyanchev
+ * @author Arjen Poutsma
  * @since 5.0
  * @see <a href="https://github.com/synchronoss/nio-multipart">Synchronoss NIO Multipart</a>
  */
@@ -301,22 +302,45 @@ public class SynchronossMultipartHttpMessageReader implements HttpMessageReader<
 		}
 
 		@Override
-		public Mono<Void> transferTo(File dest) {
+		public Mono<Void> transferTo(File destination) {
 			if (this.storage == null || !getFilename().isPresent()) {
 				return Mono.error(new IllegalStateException("The part does not represent a file."));
 			}
+			ReadableByteChannel input = null;
+			FileChannel output = null;
 			try {
-				ReadableByteChannel ch = Channels.newChannel(this.storage.getInputStream());
-				long expected = (ch instanceof FileChannel ? ((FileChannel) ch).size() : Long.MAX_VALUE);
-				long actual = new FileOutputStream(dest).getChannel().transferFrom(ch, 0, expected);
-				if (actual < expected) {
-					return Mono.error(new IOException(
-							"Could only write " + actual + " out of " + expected + " bytes"));
+				input = Channels.newChannel(this.storage.getInputStream());
+				output = new FileOutputStream(destination).getChannel();
+
+				long size = (input instanceof FileChannel ? ((FileChannel) input).size() : Long.MAX_VALUE);
+				long totalWritten = 0;
+				while (totalWritten < size) {
+					long written = output.transferFrom(input, totalWritten, size - totalWritten);
+					if (written <= 0) {
+						break;
+					}
+					totalWritten += written;
 				}
 			}
 			catch (IOException ex) {
 				return Mono.error(ex);
 			}
+			finally {
+				if (input != null) {
+					try {
+						input.close();
+					}
+					catch (IOException ignored) {
+					}
+				}
+				if (output != null) {
+					try {
+						output.close();
+					}
+					catch (IOException ignored) {
+					}
+				}
+			}
 			return Mono.empty();
 		}
 	}