diff --git a/src/ripple/app/paths/impl/Steps.h b/src/ripple/app/paths/impl/Steps.h
index 38b9dfaea2e..a312064d1f3 100644
--- a/src/ripple/app/paths/impl/Steps.h
+++ b/src/ripple/app/paths/impl/Steps.h
@@ -443,11 +443,12 @@ toStrands(
     AMMContext& ammContext,
     beast::Journal j);
 
+template <typename A>
+concept StepAsset =
+    !(std::is_same_v<A, STAmount> || std::is_same_v<A, MPTAmount>);
+
 /// @cond INTERNAL
-template <class TIn, class TOut, class TDerived>
-    requires(
-        !(std::is_same_v<TIn, STAmount> || std::is_same_v<TIn, MPTAmount> ||
-          std::is_same_v<TOut, STAmount> || std::is_same_v<TOut, MPTAmount>))
+template <StepAsset TIn, StepAsset TOut, class TDerived>
 struct StepImp : public Step
 {
     explicit StepImp() = default;
diff --git a/src/ripple/app/paths/impl/StrandFlow.h b/src/ripple/app/paths/impl/StrandFlow.h
index 2caeb1bbff5..21082169d47 100644
--- a/src/ripple/app/paths/impl/StrandFlow.h
+++ b/src/ripple/app/paths/impl/StrandFlow.h
@@ -550,11 +550,7 @@ class ActiveStrands
    @return Actual amount in and out from the strands, errors, and payment
    sandbox
 */
-template <class TInAmt, class TOutAmt>
-    requires(!(
-        std::is_same_v<TInAmt, STAmount> || std::is_same_v<TInAmt, MPTAmount> ||
-        std::is_same_v<TOutAmt, STAmount> ||
-        std::is_same_v<TOutAmt, MPTAmount>))
+template <StepAsset TInAmt, StepAsset TOutAmt>
 FlowResult<TInAmt, TOutAmt>
 flow(
     PaymentSandbox const& baseView,