diff --git a/src/core/copyjob.cpp b/src/core/copyjob.cpp
--- a/src/core/copyjob.cpp
+++ b/src/core/copyjob.cpp
@@ -1137,10 +1137,7 @@
 
     const UDSEntry entry = ((KIO::StatJob *)job)->statResult();
 
-    // Its modification time:
-    const QDateTime destmtime = QDateTime::fromMSecsSinceEpoch(1000 * entry.numberValue(KIO::UDSEntry::UDS_MODIFICATION_TIME, -1));
-    const QDateTime destctime = QDateTime::fromMSecsSinceEpoch(1000 * entry.numberValue(KIO::UDSEntry::UDS_CREATION_TIME, -1));
-
+    QDateTime destmtime, destctime;
     const KIO::filesize_t destsize = entry.numberValue(KIO::UDSEntry::UDS_SIZE);
     const QString linkDest = entry.stringValue(KIO::UDSEntry::UDS_LINK_DEST);
 
@@ -1156,7 +1153,9 @@
                  (*it).uSource.adjusted(QUrl::StripTrailingSlash).path() == linkDest)) {
             options |= RenameDialog_OverwriteItself;
         } else {
-            options |= RenameDialog_Overwrite;
+                options |= RenameDialog_Overwrite;
+                destmtime = QDateTime::fromMSecsSinceEpoch(1000 * entry.numberValue(KIO::UDSEntry::UDS_MODIFICATION_TIME, -1), Qt::UTC);
+                destctime = QDateTime::fromMSecsSinceEpoch(1000 * entry.numberValue(KIO::UDSEntry::UDS_CREATION_TIME, -1), Qt::UTC);
         }
     }
 
@@ -1409,8 +1408,7 @@
         // Its modification time:
         const UDSEntry entry = static_cast<KIO::StatJob *>(job)->statResult();
 
-        const QDateTime destmtime = QDateTime::fromMSecsSinceEpoch(1000 * entry.numberValue(KIO::UDSEntry::UDS_MODIFICATION_TIME, -1));
-        const QDateTime destctime = QDateTime::fromMSecsSinceEpoch(1000 * entry.numberValue(KIO::UDSEntry::UDS_CREATION_TIME, -1));
+        QDateTime destmtime, destctime;
         const KIO::filesize_t destsize = entry.numberValue(KIO::UDSEntry::UDS_SIZE);
         const QString linkDest = entry.stringValue(KIO::UDSEntry::UDS_LINK_DEST);
 
@@ -1428,6 +1426,9 @@
                 options = RenameDialog_OverwriteItself;
             } else {
                 options = RenameDialog_Overwrite;
+                // These timestamps are used only when RenameDialog_Overwrite is set.
+                destmtime = QDateTime::fromMSecsSinceEpoch(1000 * entry.numberValue(KIO::UDSEntry::UDS_MODIFICATION_TIME, -1), Qt::UTC);
+                destctime = QDateTime::fromMSecsSinceEpoch(1000 * entry.numberValue(KIO::UDSEntry::UDS_CREATION_TIME, -1), Qt::UTC);
             }
             isDir = false;
         }
diff --git a/src/widgets/fileundomanager.cpp b/src/widgets/fileundomanager.cpp
--- a/src/widgets/fileundomanager.cpp
+++ b/src/widgets/fileundomanager.cpp
@@ -65,7 +65,7 @@
     stream >> op.m_valid >> type >> op.m_renamed
            >> op.m_src >> op.m_dst >> op.m_target >> mtime;
     op.m_type = static_cast<BasicOperation::Type>(type);
-    op.m_mtime = QDateTime::fromMSecsSinceEpoch(1000 * mtime);
+    op.m_mtime = QDateTime::fromMSecsSinceEpoch(1000 * mtime, Qt::UTC);
     return stream;
 }
 
@@ -484,7 +484,7 @@
         BasicOperation op = m_current.m_opStack.last();
         //qDebug() << "stat result for " << op.m_dst;
         KIO::StatJob *statJob = static_cast<KIO::StatJob *>(job);
-        const QDateTime mtime = QDateTime::fromMSecsSinceEpoch(1000 * statJob->statResult().numberValue(KIO::UDSEntry::UDS_MODIFICATION_TIME, -1));
+        const QDateTime mtime = QDateTime::fromMSecsSinceEpoch(1000 * statJob->statResult().numberValue(KIO::UDSEntry::UDS_MODIFICATION_TIME, -1), Qt::UTC);
         if (mtime != op.m_mtime) {
             //qDebug() << op.m_dst << " was modified after being copied!";
             QDateTime srcTime = op.m_mtime.toLocalTime();