diff --git a/src/test/app/Loan_test.cpp b/src/test/app/Loan_test.cpp
index dbb0033368..ae33459791 100644
--- a/src/test/app/Loan_test.cpp
+++ b/src/test/app/Loan_test.cpp
@@ -92,23 +92,6 @@ protected:
     // even if they are set to unsupported.
 
     FeatureBitset const all_{jtx::testableAmendments()};
-
-    // All 2^N permutations of `all_` with each subset of the given features
-    // excluded. The first entry is always `all_` itself (empty exclusion);
-    // the last excludes every feature in the list.
-    std::vector<FeatureBitset>
-    amendmentCombinations(std::initializer_list<uint256> features) const
-    {
-        std::vector<FeatureBitset> result{all_};
-        for (auto const& f : features)
-        {
-            auto const n = result.size();
-            for (std::size_t i = 0; i < n; ++i)
-                result.push_back(result[i] - f);
-        }
-        return result;
-    }
-
     std::string const iouCurrency_{"IOU"};
 
     void
@@ -8624,8 +8607,8 @@ public:
     run() override
     {
         runAmendmentIndependent();
-        for (auto const& features :
-             amendmentCombinations({fixCleanup3_1_3, fixCleanup3_2_0, featureMPTokensV2}))
+        for (auto const& features : jtx::amendmentCombinations(
+                 {fixCleanup3_1_3, fixCleanup3_2_0, featureMPTokensV2}, all_))
             runAmendmentSensitive(features);
     }
 };
diff --git a/src/test/jtx/Env.h b/src/test/jtx/Env.h
index 3d813d993c..90a73c3350 100644
--- a/src/test/jtx/Env.h
+++ b/src/test/jtx/Env.h
@@ -96,6 +96,19 @@ testableAmendments()
     return kIds;
 }
 
+inline std::vector<FeatureBitset>
+amendmentCombinations(std::initializer_list<uint256> features, FeatureBitset seed)
+{
+    std::vector<FeatureBitset> result{seed};
+    for (auto const& f : features)
+    {
+        auto const n = result.size();
+        for (std::size_t i = 0; i < n; ++i)
+            result.push_back(result[i] - f);
+    }
+    return result;
+}
+
 //------------------------------------------------------------------------------
 
 class SuiteLogs : public Logs
diff --git a/src/test/jtx/impl/utility.cpp b/src/test/jtx/impl/utility.cpp
index ead067d058..7da419c6e7 100644
--- a/src/test/jtx/impl/utility.cpp
+++ b/src/test/jtx/impl/utility.cpp
@@ -4,7 +4,6 @@
 
 #include <xrpld/rpc/RPCCall.h>
 
-#include <xrpl/basics/base_uint.h>
 #include <xrpl/basics/contract.h>
 #include <xrpl/basics/strHex.h>
 #include <xrpl/beast/utility/Journal.h>
@@ -12,7 +11,6 @@
 #include <xrpl/ledger/ReadView.h>
 #include <xrpl/protocol/AccountID.h>
 #include <xrpl/protocol/ErrorCodes.h>
-#include <xrpl/protocol/Feature.h>
 #include <xrpl/protocol/HashPrefix.h>
 #include <xrpl/protocol/Indexes.h>
 #include <xrpl/protocol/SField.h>
@@ -23,8 +21,6 @@
 #include <xrpl/protocol/XRPAmount.h>
 #include <xrpl/protocol/jss.h>
 
-#include <cstddef>
-#include <initializer_list>
 #include <utility>
 #include <vector>
 
@@ -104,18 +100,4 @@ cmdToJSONRPC(std::vector<std::string> const& args, beast::Journal j, unsigned in
         jv[jss::id] = paramsObj[jss::id];
     return jv;
 }
-
-std::vector<FeatureBitset>
-amendmentCombinations(std::initializer_list<uint256> features, FeatureBitset seed)
-{
-    std::vector<FeatureBitset> result{seed};
-    for (auto const& f : features)
-    {
-        auto const n = result.size();
-        for (std::size_t i = 0; i < n; ++i)
-            result.push_back(result[i] - f);
-    }
-    return result;
-}
-
 }  // namespace xrpl::test::jtx
diff --git a/src/test/jtx/utility.h b/src/test/jtx/utility.h
index 8dbc34de63..597e006575 100644
--- a/src/test/jtx/utility.h
+++ b/src/test/jtx/utility.h
@@ -62,9 +62,5 @@ cmdToJSONRPC(std::vector<std::string> const& args, beast::Journal j, unsigned in
  * Useful for running a test over every combination of optional amendments
  * so that each case is exercised both with and without each feature.
  */
-std::vector<FeatureBitset>
-amendmentCombinations(
-    std::initializer_list<uint256> features,
-    FeatureBitset seed = testableAmendments());
 
 }  // namespace xrpl::test::jtx