diff --git a/src/wallet/lite_wallet_controller.cpp b/src/wallet/lite_wallet_controller.cpp
index 6596f4e..d1bc0e4 100644
--- a/src/wallet/lite_wallet_controller.cpp
+++ b/src/wallet/lite_wallet_controller.cpp
@@ -887,6 +887,11 @@ LiteImportResult LiteWalletController::importKey(std::string spendingOrViewingKe
     }
     // Transparent WIFs begin with U/5/K/L (TImportCommand); shielded keys begin with
     // "secret-..." / viewing keys "zxview...", so this prefix check usually won't collide.
+    // NB: the lite/SDXL backend's viewing key is an *extended full* viewing key ("zxviews…",
+    // hrp_sapling_viewing_key), which is genuinely correct here — do NOT "harmonize" this with the
+    // full node, whose z_importviewingkey takes an *incoming* viewing key ("zivks…") instead. The
+    // two variants accept different viewing-key forms; a VK is not portable between them. Regardless,
+    // the two-command fallback below means a mis-guessed prefix never rejects an otherwise-valid key.
     const char first = spendingOrViewingKey[0];
     const bool transparentFirst = (first == 'U' || first == '5' || first == 'K' || first == 'L');