diff --git a/src/corelib/kernel/qsignalmapper.cpp b/src/corelib/kernel/qsignalmapper.cpp
index 34fea861cd..24b174972f 100644
--- a/src/corelib/kernel/qsignalmapper.cpp
+++ b/src/corelib/kernel/qsignalmapper.cpp
@@ -38,7 +38,6 @@
 ****************************************************************************/
 
 #include "qglobal.h"
-#if QT_DEPRECATED_SINCE(5, 10)
 
 #include "qsignalmapper.h"
 #include "qhash.h"
@@ -64,7 +63,6 @@ public:
 /*!
     \class QSignalMapper
     \inmodule QtCore
-    \obsolete The recommended solution is connecting the signal to a lambda.
     \brief The QSignalMapper class bundles signals from identifiable senders.
 
     \ingroup objectmodel
@@ -72,7 +70,9 @@ public:
 
     This class collects a set of parameterless signals, and re-emits
     them with integer, string or widget parameters corresponding to
-    the object that sent the signal.
+    the object that sent the signal. Note that in most cases you can
+    use lambdas for passing custom parameters to slots. This is less
+    costly and will simplify the code.
 
     The class supports the mapping of particular strings or integers
     with particular objects using setMapping(). The objects' signals
@@ -314,5 +314,3 @@ void QSignalMapper::map(QObject *sender)
 QT_END_NAMESPACE
 
 #include "moc_qsignalmapper.cpp"
-
-#endif
diff --git a/src/corelib/kernel/qsignalmapper.h b/src/corelib/kernel/qsignalmapper.h
index 6c4cfa9627..0da1e8f87d 100644
--- a/src/corelib/kernel/qsignalmapper.h
+++ b/src/corelib/kernel/qsignalmapper.h
@@ -42,8 +42,6 @@
 
 #include <QtCore/qobject.h>
 
-#if QT_DEPRECATED_SINCE(5, 10)
-
 QT_BEGIN_NAMESPACE
 
 class QSignalMapperPrivate;
@@ -53,7 +51,7 @@ class Q_CORE_EXPORT QSignalMapper : public QObject
     Q_OBJECT
     Q_DECLARE_PRIVATE(QSignalMapper)
 public:
-    QT_DEPRECATED explicit QSignalMapper(QObject *parent = nullptr);
+    explicit QSignalMapper(QObject *parent = nullptr);
     ~QSignalMapper();
 
     void setMapping(QObject *sender, int id);
@@ -84,6 +82,4 @@ private:
 
 QT_END_NAMESPACE
 
-#endif
-
 #endif // QSIGNALMAPPER_H