diff --git a/src/test/app/Flow_test.cpp b/src/test/app/Flow_test.cpp
index 521addc5c3..89393dfcc3 100644
--- a/src/test/app/Flow_test.cpp
+++ b/src/test/app/Flow_test.cpp
@@ -747,8 +747,9 @@ struct Flow_test : public beast::unit_test::suite
 
         auto const timeDelta = Env{*this}.closed ()->info ().closeTimeResolution;
 
-        for(auto const& d: {-timeDelta*100, +timeDelta*100}){
-            auto const closeTime = fix1141Time () + d;
+        for (auto const& d : {-100 * timeDelta, +100 * timeDelta})
+        {
+            auto const closeTime = fix1141Time () + d ;
             Env env (*this, no_features);
             env.close (closeTime);
 
@@ -1112,7 +1113,7 @@ struct Flow_test : public beast::unit_test::suite
         using namespace jtx;
         Env env(*this, with_features(featureFlow));
         auto const timeDelta = env.closed ()->info ().closeTimeResolution;
-        auto const d = withFix ? timeDelta*100 : -timeDelta*100;
+        auto const d = withFix ? 100*timeDelta : -100*timeDelta;
         auto closeTime = fix1443Time() + d;
         env.close(closeTime);
 
@@ -1165,7 +1166,7 @@ struct Flow_test : public beast::unit_test::suite
         using namespace jtx;
         Env env(*this, with_features(featureFlow));
         auto const timeDelta = env.closed ()->info ().closeTimeResolution;
-        auto const d = withFix ? timeDelta*100 : -timeDelta*100;
+        auto const d = withFix ? 100*timeDelta : -100*timeDelta;
         auto closeTime = fix1449Time() + d;
         env.close(closeTime);
 
diff --git a/src/test/app/Offer_test.cpp b/src/test/app/Offer_test.cpp
index db66854098..003b4c06e1 100644
--- a/src/test/app/Offer_test.cpp
+++ b/src/test/app/Offer_test.cpp
@@ -253,11 +253,10 @@ public:
         for (int i=0;i<101;++i)
             env (offer (carol, USD (1), EUR (2)));
 
-        for (auto timeDelta : {
-            - env.closed()->info().closeTimeResolution,
-                env.closed()->info().closeTimeResolution} )
+        for (auto d : {-1, 1})
         {
-            auto const closeTime = STAmountSO::soTime + timeDelta;
+            auto const closeTime = STAmountSO::soTime +
+                d * env.closed()->info().closeTimeResolution;
             env.close (closeTime);
             *stAmountCalcSwitchover = closeTime > STAmountSO::soTime;
             // Will fail without the underflow fix
diff --git a/src/test/beast/aged_associative_container_test.cpp b/src/test/beast/aged_associative_container_test.cpp
index 8c2354a2f5..0f6e5fe332 100644
--- a/src/test/beast/aged_associative_container_test.cpp
+++ b/src/test/beast/aged_associative_container_test.cpp
@@ -142,6 +142,13 @@ public:
             return true;
         }
 
+        template <class U>
+        bool operator!= (AllocT <U> const& o) const
+        {
+            return !(*this == o);
+        }
+
+
         T* allocate (std::size_t n, T const* = 0)
         {
             return static_cast <T*> (
diff --git a/src/test/ledger/Invariants_test.cpp b/src/test/ledger/Invariants_test.cpp
index 65f35805ac..c59d9de0cf 100644
--- a/src/test/ledger/Invariants_test.cpp
+++ b/src/test/ledger/Invariants_test.cpp
@@ -250,7 +250,7 @@ class Invariants_test : public beast::unit_test::suite
                 auto const sle = ac.view().peek (keylet::account(A1.id()));
                 if(! sle)
                     return false;
-                STAmount nonNative {A2["USD"](51)};
+                STAmount nonNative (A2["USD"](51));
                 sle->setFieldAmount (sfBalance, nonNative);
                 ac.view().update (sle);
                 return true;
@@ -366,7 +366,7 @@ class Invariants_test : public beast::unit_test::suite
                     return false;
                 auto sleNew = std::make_shared<SLE> (
                     keylet::escrow(A1, (*sle)[sfSequence] + 2));
-                STAmount nonNative {A2["USD"](51)};
+                STAmount nonNative (A2["USD"](51));
                 sleNew->setFieldAmount (sfAmount, nonNative);
                 ac.view().insert (sleNew);
                 return true;
diff --git a/src/test/ledger/PaymentSandbox_test.cpp b/src/test/ledger/PaymentSandbox_test.cpp
index 7cee87c662..0ab0efef29 100644
--- a/src/test/ledger/PaymentSandbox_test.cpp
+++ b/src/test/ledger/PaymentSandbox_test.cpp
@@ -278,10 +278,10 @@ class PaymentSandbox_test : public beast::unit_test::suite
         STAmount hugeAmt (issue, STAmount::cMaxValue, STAmount::cMaxOffset - 1,
             false, false, STAmount::unchecked{});
 
-        for (auto timeDelta : {-env.closed ()->info ().closeTimeResolution,
-                 env.closed ()->info ().closeTimeResolution})
+        for (auto d : {-1, 1})
         {
-            auto const closeTime = fix1141Time () + timeDelta;
+            auto const closeTime = fix1141Time () +
+                d * env.closed()->info().closeTimeResolution;
             env.close (closeTime);
             ApplyViewImpl av (&*env.current (), tapNONE);
             PaymentSandbox pv (&av);