diff --git a/zircon/system/ulib/blobfs/buffer.cpp b/zircon/system/ulib/blobfs/buffer.cpp
index dcb4ec9..a14a990 100644
--- a/zircon/system/ulib/blobfs/buffer.cpp
+++ b/zircon/system/ulib/blobfs/buffer.cpp
@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 #include <blobfs/buffer.h>
-#include <blobfs/writeback-work.h>
 
 #include <utility>
 
@@ -133,7 +132,7 @@
     txn->SetBuffer(vmoid_);
 }
 
-void Buffer::AddTransaction(size_t start, size_t disk_start, size_t length, WritebackWork* work) {
+void Buffer::AddTransaction(size_t start, size_t disk_start, size_t length, WriteTxn* work) {
     // Ensure the request fits within the buffer.
     ZX_DEBUG_ASSERT(length > 0);
     ZX_DEBUG_ASSERT(start + length <= capacity_);
diff --git a/zircon/system/ulib/blobfs/include/blobfs/buffer.h b/zircon/system/ulib/blobfs/include/blobfs/buffer.h
index 41818c5..8bfb59e 100644
--- a/zircon/system/ulib/blobfs/include/blobfs/buffer.h
+++ b/zircon/system/ulib/blobfs/include/blobfs/buffer.h
@@ -47,7 +47,7 @@
 
     // Adds a transaction to |work| with buffer offset |start| and length |length|,
     // starting at block |disk_start| on disk.
-    void AddTransaction(size_t start, size_t disk_start, size_t length, WritebackWork* work);
+    void AddTransaction(size_t start, size_t disk_start, size_t length, WriteTxn* work);
 
     // Returns true if |txn| belongs to this buffer, and if so verifies
     // that it owns the next valid set of blocks within the buffer.