diff --git a/src/corelib/serialization/qcborstreamreader.h b/src/corelib/serialization/qcborstreamreader.h
index 5c03f95f0c2..aa11306fb22 100644
--- a/src/corelib/serialization/qcborstreamreader.h
+++ b/src/corelib/serialization/qcborstreamreader.h
@@ -11,6 +11,9 @@
 #include <QtCore/qstring.h>
 #include <QtCore/qstringview.h>
 
+#ifdef __cpp_lib_bit_cast
+#include <bit>
+#endif
 #include <memory>
 
 QT_REQUIRE_CONFIG(cborstreamreader);
@@ -188,9 +191,13 @@ private:
     {
         using UIntFP = typename QIntegerForSizeof<FP>::Unsigned;
         UIntFP u = UIntFP(value64);
+#ifdef __cpp_lib_bit_cast
+        return std::bit_cast<FP>(u);
+#else
         FP f;
         memcpy(static_cast<void *>(&f), &u, sizeof(f));
         return f;
+#endif
     }
 
     friend QCborStreamReaderPrivate;