diff --git a/lang/qt/tests/t-addexistingsubkey.cpp b/lang/qt/tests/t-addexistingsubkey.cpp
index 2e654cec..87eadf43 100644
--- a/lang/qt/tests/t-addexistingsubkey.cpp
+++ b/lang/qt/tests/t-addexistingsubkey.cpp
@@ -222,9 +222,9 @@ private Q_SLOTS:
         // several times
         const auto allowedDeltaTSeconds = 1;
         const auto expectedExpirationRange = std::make_pair(
-            sourceSubkey.expirationTime() - allowedDeltaTSeconds,
-            sourceSubkey.expirationTime() + allowedDeltaTSeconds);
-        const auto actualExpiration = key.subkey(2).expirationTime();
+            uint_least32_t(sourceSubkey.expirationTime()) - allowedDeltaTSeconds,
+            uint_least32_t(sourceSubkey.expirationTime()) + allowedDeltaTSeconds);
+        const auto actualExpiration = uint_least32_t(key.subkey(2).expirationTime());
         QVERIFY2(actualExpiration >= expectedExpirationRange.first,
                  ("actual: " + std::to_string(actualExpiration) +
                   "; expected: " + std::to_string(expectedExpirationRange.first)).c_str());
diff --git a/lang/qt/tests/t-changeexpiryjob.cpp b/lang/qt/tests/t-changeexpiryjob.cpp
index 090002f3..3da74d46 100644
--- a/lang/qt/tests/t-changeexpiryjob.cpp
+++ b/lang/qt/tests/t-changeexpiryjob.cpp
@@ -70,7 +70,7 @@ private Q_SLOTS:
         QVERIFY(!key.isNull());
         QVERIFY(!key.subkey(0).isNull());
         QVERIFY(!key.subkey(1).isNull());
-        const auto subkeyExpiration = key.subkey(1).expirationTime();
+        const auto subkeyExpiration = uint_least32_t(key.subkey(1).expirationTime());
 
         {
             // Create the job
@@ -101,7 +101,7 @@ private Q_SLOTS:
                 newExpirationDate.toSecsSinceEpoch() - 10,
                 QDateTime::currentDateTime().addDays(1).toSecsSinceEpoch());
             {
-                const auto actualExpiration = key.subkey(0).expirationTime();
+                const auto actualExpiration = uint_least32_t(key.subkey(0).expirationTime());
                 QVERIFY2(actualExpiration >= expectedExpirationRange.first,
                         ("actual: " + std::to_string(actualExpiration) +
                          "; expected: " + std::to_string(expectedExpirationRange.first)).c_str());
@@ -110,7 +110,7 @@ private Q_SLOTS:
                          "; expected: " + std::to_string(expectedExpirationRange.second)).c_str());
             }
             {
-                const auto actualExpiration = key.subkey(1).expirationTime();
+                const auto actualExpiration = uint_least32_t(key.subkey(1).expirationTime());
                 QCOMPARE(actualExpiration, subkeyExpiration);  // unchanged
             }
         }
@@ -133,7 +133,7 @@ private Q_SLOTS:
         QVERIFY(!key.isNull());
         QVERIFY(!key.subkey(0).isNull());
         QVERIFY(!key.subkey(1).isNull());
-        const auto primaryKeyExpiration = key.subkey(0).expirationTime();
+        const auto primaryKeyExpiration = uint_least32_t(key.subkey(0).expirationTime());
 
         {
             // Create the job
@@ -164,11 +164,11 @@ private Q_SLOTS:
                 newExpirationDate.toSecsSinceEpoch() - 10,
                 QDateTime::currentDateTime().addDays(2).toSecsSinceEpoch());
             {
-                const auto actualExpiration = key.subkey(0).expirationTime();
+                const auto actualExpiration = uint_least32_t(key.subkey(0).expirationTime());
                 QCOMPARE(actualExpiration, primaryKeyExpiration);  // unchanged
             }
             {
-                const auto actualExpiration = key.subkey(1).expirationTime();
+                const auto actualExpiration = uint_least32_t(key.subkey(1).expirationTime());
                 QVERIFY2(actualExpiration >= expectedExpirationRange.first,
                         ("actual: " + std::to_string(actualExpiration) +
                          "; expected: " + std::to_string(expectedExpirationRange.first)).c_str());
@@ -196,7 +196,7 @@ private Q_SLOTS:
         QVERIFY(!key.isNull());
         QVERIFY(!key.subkey(0).isNull());
         QVERIFY(!key.subkey(1).isNull());
-        const auto subkeyExpiration = key.subkey(1).expirationTime();
+        const auto subkeyExpiration = uint_least32_t(key.subkey(1).expirationTime());
 
         {
             // Create the job
@@ -228,7 +228,7 @@ private Q_SLOTS:
                 newExpirationDate.toSecsSinceEpoch() - 10,
                 QDateTime::currentDateTime().addDays(3).toSecsSinceEpoch());
             {
-                const auto actualExpiration = key.subkey(0).expirationTime();
+                const auto actualExpiration = uint_least32_t(key.subkey(0).expirationTime());
                 QVERIFY2(actualExpiration >= expectedExpirationRange.first,
                         ("actual: " + std::to_string(actualExpiration) +
                          "; expected: " + std::to_string(expectedExpirationRange.first)).c_str());
@@ -237,7 +237,7 @@ private Q_SLOTS:
                          "; expected: " + std::to_string(expectedExpirationRange.second)).c_str());
             }
             {
-                const auto actualExpiration = key.subkey(1).expirationTime();
+                const auto actualExpiration = uint_least32_t(key.subkey(1).expirationTime());
                 QCOMPARE(actualExpiration, subkeyExpiration);  // unchanged
             }
         }
@@ -291,7 +291,7 @@ private Q_SLOTS:
                 newExpirationDate.toSecsSinceEpoch() - 10,
                 QDateTime::currentDateTime().addDays(4).toSecsSinceEpoch());
             {
-                const auto actualExpiration = key.subkey(0).expirationTime();
+                const auto actualExpiration = uint_least32_t(key.subkey(0).expirationTime());
                 QVERIFY2(actualExpiration >= expectedExpirationRange.first,
                         ("actual: " + std::to_string(actualExpiration) +
                          "; expected: " + std::to_string(expectedExpirationRange.first)).c_str());
@@ -300,7 +300,7 @@ private Q_SLOTS:
                          "; expected: " + std::to_string(expectedExpirationRange.second)).c_str());
             }
             {
-                const auto actualExpiration = key.subkey(1).expirationTime();
+                const auto actualExpiration = uint_least32_t(key.subkey(1).expirationTime());
                 QVERIFY2(actualExpiration >= expectedExpirationRange.first,
                         ("actual: " + std::to_string(actualExpiration) +
                           "; expected: " + std::to_string(expectedExpirationRange.first)).c_str());
@@ -359,7 +359,7 @@ private Q_SLOTS:
                 newExpirationDate.toSecsSinceEpoch() - 10,
                 QDateTime::currentDateTime().addDays(5).toSecsSinceEpoch());
             {
-                const auto actualExpiration = key.subkey(0).expirationTime();
+                const auto actualExpiration = uint_least32_t(key.subkey(0).expirationTime());
                 QVERIFY2(actualExpiration >= expectedExpirationRange.first,
                         ("actual: " + std::to_string(actualExpiration) +
                          "; expected: " + std::to_string(expectedExpirationRange.first)).c_str());
@@ -368,7 +368,7 @@ private Q_SLOTS:
                          "; expected: " + std::to_string(expectedExpirationRange.second)).c_str());
             }
             {
-                const auto actualExpiration = key.subkey(1).expirationTime();
+                const auto actualExpiration = uint_least32_t(key.subkey(1).expirationTime());
                 QVERIFY2(actualExpiration >= expectedExpirationRange.first,
                         ("actual: " + std::to_string(actualExpiration) +
                           "; expected: " + std::to_string(expectedExpirationRange.first)).c_str());