3 files changed, 12 insertions, 4 deletions
diff --git a/src/corelib/time/qdatetime.h b/src/corelib/time/qdatetime.h
index 5a8e1aecd8..62642a5fd2 100644
--- a/src/corelib/time/qdatetime.h
+++ b/src/corelib/time/qdatetime.h
@@ -55,7 +55,9 @@ Q_FORWARD_DECLARE_OBJC_CLASS(NSDate);
 
 QT_BEGIN_NAMESPACE
 
+#if QT_CONFIG(timezone)
 class QTimeZone;
+#endif
 class QDateTime;
 
 class Q_CORE_EXPORT QDate // ### Qt 6: change to be used by value, not const &
diff --git a/src/corelib/time/qdatetimeparser.cpp b/src/corelib/time/qdatetimeparser.cpp
index 860f975b4f..5bd2821827 100644
--- a/src/corelib/time/qdatetimeparser.cpp
+++ b/src/corelib/time/qdatetimeparser.cpp
@@ -788,11 +788,9 @@ QDateTimeParser::parseSection(const QDateTime &currentValue, int sectionIndex,
             text->replace(offset, used, sectiontext.constData(), used);
         break; }
     case TimeZoneSection:
-#if QT_CONFIG(timezone)
         result = findTimeZone(sectionTextRef, currentValue,
                               absoluteMax(sectionIndex),
                               absoluteMin(sectionIndex));
-#endif
         break;
     case MonthSection:
     case DayOfWeekSectionShort:
@@ -1692,7 +1690,12 @@ QDateTimeParser::findTimeZone(QStringRef str, const QDateTime &when,
     if (index > 0 && maxVal >= offset && offset >= minVal)
         return ParsedSection(Acceptable, offset, index);
 
-#endif // timezone
+#else // timezone
+    Q_UNUSED(str);
+    Q_UNUSED(when);
+    Q_UNUSED(maxVal);
+    Q_UNUSED(minVal);
+#endif
     return ParsedSection();
 }
 
diff --git a/src/widgets/widgets/qdatetimeedit.cpp b/src/widgets/widgets/qdatetimeedit.cpp
index 8db5a12a4b..5d64aad040 100644
--- a/src/widgets/widgets/qdatetimeedit.cpp
+++ b/src/widgets/widgets/qdatetimeedit.cpp
@@ -1728,9 +1728,12 @@ QDateTime QDateTimeEditPrivate::convertTimeSpec(const QDateTime &datetime)
         return datetime.toLocalTime();
     case Qt::OffsetFromUTC:
         return datetime.toOffsetFromUtc(value.toDateTime().offsetFromUtc());
-#if QT_CONFIG(timezone)
     case Qt::TimeZone:
+#if QT_CONFIG(timezone)
         return datetime.toTimeZone(value.toDateTime().timeZone());
+#else
+        qWarning("QDateTimeEdit: Internal: enable timezone feature to support Qt::TimeZone");
+        return datetime;
 #endif
     }
     Q_UNREACHABLE();