diff --git a/services/wspr/internal/app/app.go b/services/wspr/internal/app/app.go
index 140203f..9357713 100644
--- a/services/wspr/internal/app/app.go
+++ b/services/wspr/internal/app/app.go
@@ -36,7 +36,8 @@
 
 const (
 	// pkgPath is the prefix os errors in this package.
-	pkgPath = "v.io/x/ref/services/wspr/internal/app"
+	pkgPath  = "v.io/x/ref/services/wspr/internal/app"
+	typeFlow = 0
 )
 
 // Errors
@@ -373,7 +374,7 @@
 	c.servers = make(map[uint32]*server.Server)
 	c.typeReader = lib.NewTypeReader()
 	c.typeDecoder = vom.NewTypeDecoder(c.typeReader)
-	c.typeEncoder = vom.NewTypeEncoder(lib.NewTypeWriter(c.writerCreator(0)))
+	c.typeEncoder = vom.NewTypeEncoder(lib.NewTypeWriter(c.writerCreator(typeFlow)))
 	c.lastGeneratedId += 2
 }
 
diff --git a/services/wspr/internal/lib/binary_util.go b/services/wspr/internal/lib/binary_util.go
index 9ddc65c..f35aa34 100644
--- a/services/wspr/internal/lib/binary_util.go
+++ b/services/wspr/internal/lib/binary_util.go
@@ -18,6 +18,9 @@
 	errUintOverflow = verror.Register(pkgPath+".errUintOverflow", verror.NoRetry, "{1:}{2:} wspr: scalar larger than 8 bytes{:_}")
 )
 
+// The logic of the two functions here are copied from the vom implementations and
+// should be kept in sync.
+
 // Unsigned integers are the basis for all other primitive values.  This is a
 // two-state encoding.  If the number is less than 128 (0 through 0x7f), its
 // value is written directly.  Otherwise the value is written in big-endian byte