diff --git a/src/chain.h b/src/chain.h
index 9d858a609..a3b1b7ae9 100644
--- a/src/chain.h
+++ b/src/chain.h
@@ -355,8 +355,6 @@ public:
 
         // Only read/write nSproutValue if the client version used to create
         // this index was storing them.
-        // TODO: See if we can get away with not serializing the boost::optional
-        // one-byte header, without requiring users to reindex on upgrade.
         if ((nType & SER_DISK) && (nVersion >= SPROUT_VALUE_VERSION)) {
             READWRITE(nSproutValue);
         }