diff --git a/repository/Seaside-Zinc-Core.package/ZnRingBuffer.class/instance/writeAllOn..st b/repository/Seaside-Zinc-Core.package/ZnRingBuffer.class/instance/writeAllOn..st
new file mode 100644
index 000000000..0c015081c
--- /dev/null
+++ b/repository/Seaside-Zinc-Core.package/ZnRingBuffer.class/instance/writeAllOn..st
@@ -0,0 +1,4 @@
+private
+writeAllOn: aStream
+
+	aStream nextPutAll: buffer
\ No newline at end of file
diff --git a/repository/Seaside-Zinc-Core.package/ZnStreamingMultiPartFormDataEntity.class/instance/parseMultiPartFieldWithoutLengthWithBoundary.writeOn..st b/repository/Seaside-Zinc-Core.package/ZnStreamingMultiPartFormDataEntity.class/instance/parseMultiPartFieldWithoutLengthWithBoundary.writeOn..st
index 80d08959e..0747b2e3f 100644
--- a/repository/Seaside-Zinc-Core.package/ZnStreamingMultiPartFormDataEntity.class/instance/parseMultiPartFieldWithoutLengthWithBoundary.writeOn..st
+++ b/repository/Seaside-Zinc-Core.package/ZnStreamingMultiPartFormDataEntity.class/instance/parseMultiPartFieldWithoutLengthWithBoundary.writeOn..st
@@ -36,7 +36,7 @@ parseMultiPartFieldWithoutLengthWithBoundary: aBoundary writeOn: writer
 					If not we have to check for the next boundary candidate as we might have loaded the next boundary partially."
 					buffer = aBoundary ] ]
 		ifNil: [
-			writer nextPutAll: buffer.
+			buffer writeAllOn: writer.
 			stream atEnd
 				ifFalse: [
 					"#next:into: answers a copy of the buffer if not enough bytes could be read.