diff --git a/src/crypto/cn/CryptoNight_constants.h b/src/crypto/cn/CryptoNight_constants.h
index 1bc06a3b..3b44a7e2 100644
--- a/src/crypto/cn/CryptoNight_constants.h
+++ b/src/crypto/cn/CryptoNight_constants.h
@@ -198,7 +198,7 @@ inline uint32_t cn_select_iter(Algo algorithm, Variant variant)
 template<Variant variant> inline constexpr Variant cn_base_variant()  { return VARIANT_0; }
 template<> inline constexpr Variant cn_base_variant<VARIANT_0>()      { return VARIANT_0; }
 template<> inline constexpr Variant cn_base_variant<VARIANT_1>()      { return VARIANT_1; }
-template<> inline constexpr Variant cn_base_variant<VARIANT_TUBE>()   { return VARIANT_1; }
+template<> inline constexpr Variant cn_base_variant<VARIANT_TUBE>()   { return VARIANT_TUBE; }
 template<> inline constexpr Variant cn_base_variant<VARIANT_XTL>()    { return VARIANT_1; }
 template<> inline constexpr Variant cn_base_variant<VARIANT_MSR>()    { return VARIANT_1; }
 template<> inline constexpr Variant cn_base_variant<VARIANT_XHV>()    { return VARIANT_0; }