diff --git a/connection.go b/connection.go
index 24647f0..2fe72ed 100644
--- a/connection.go
+++ b/connection.go
@@ -26,7 +26,6 @@ import (
 
 	"golang.org/x/net/context"
 
-	"github.com/jacobsa/fuse/fuseops"
 	"github.com/jacobsa/fuse/internal/buffer"
 	"github.com/jacobsa/fuse/internal/fusekernel"
 )
@@ -90,7 +89,7 @@ type Connection struct {
 // context that the user uses to reply to the op.
 type opState struct {
 	inMsg *buffer.InMessage
-	op    fuseops.Op
+	op    interface{}
 	opID  uint32 // For logging
 }
 
@@ -396,7 +395,7 @@ func (c *Connection) writeMessage(msg []byte) (err error) {
 // /dev/fuse. It must not be called multiple times concurrently.
 //
 // LOCKS_EXCLUDED(c.mu)
-func (c *Connection) ReadOp() (ctx context.Context, op fuseops.Op, err error) {
+func (c *Connection) ReadOp() (ctx context.Context, op interface{}, err error) {
 	// Keep going until we find a request we know how to convert.
 	for {
 		// Read the next message from the kernel.
diff --git a/conversions.go b/conversions.go
index a011c91..e454466 100644
--- a/conversions.go
+++ b/conversions.go
@@ -27,13 +27,13 @@ import (
 	"github.com/jacobsa/fuse/internal/fusekernel"
 )
 
-// Convert a kernel message to an appropriate implementation of fuseops.Op. If
-// the op is unknown, a special unexported type will be used.
+// Convert a kernel message to an appropriate op. If the op is unknown, a
+// special unexported type will be used.
 //
 // The caller is responsible for arranging for the message to be destroyed.
 func convertInMessage(
 	m *buffer.InMessage,
-	protocol fusekernel.Protocol) (o fuseops.Op, err error) {
+	protocol fusekernel.Protocol) (o interface{}, err error) {
 	switch m.Header().Opcode {
 	case fusekernel.OpLookup:
 		buf := m.ConsumeBytes(m.Len())
diff --git a/ops.go b/ops.go
index 9bf884a..158337b 100644
--- a/ops.go
+++ b/ops.go
@@ -28,7 +28,7 @@ import (
 // response, return a nil response.
 func kernelResponse(
 	fuseID uint64,
-	op fuseops.Op,
+	op interface{},
 	opErr error,
 	protocol fusekernel.Protocol) (msg []byte) {
 	// If the user replied with an error, create room enough just for the result
@@ -59,7 +59,7 @@ func kernelResponse(
 // Like kernelResponse, but assumes the user replied with a nil error to the
 // op.
 func kernelResponseForOp(
-	op fuseops.Op,
+	op interface{},
 	protocol fusekernel.Protocol) (b buffer.OutMessage) {
 	// Create the appropriate output message
 	switch o := op.(type) {