diff --git a/src/corelib/io/qfileinfo.cpp b/src/corelib/io/qfileinfo.cpp
index 11db5dc146..8bf7115b58 100644
--- a/src/corelib/io/qfileinfo.cpp
+++ b/src/corelib/io/qfileinfo.cpp
@@ -1377,6 +1377,7 @@ qint64 QFileInfo::size() const
 }
 
 /*!
+    \fn QDateTime QFileInfo::birthTime() const
     \since 5.10
     Returns the date and time when the file was created / born.
 
@@ -1388,12 +1389,9 @@ qint64 QFileInfo::size() const
 
     \sa lastModified(), lastRead(), metadataChangeTime()
 */
-QDateTime QFileInfo::birthTime() const
-{
-    return fileTime(QFile::FileBirthTime);
-}
 
 /*!
+    \fn QDateTime QFileInfo::metadataChangeTime() const
     \since 5.10
     Returns the date and time when the file metadata was changed. A metadata
     change occurs when the file is created, but it also occurs whenever the
@@ -1405,12 +1403,10 @@ QDateTime QFileInfo::birthTime() const
 
     \sa lastModified(), lastRead()
 */
-QDateTime QFileInfo::metadataChangeTime() const
-{
-    return fileTime(QFile::FileMetadataChangeTime);
-}
 
 /*!
+    \fn QDateTime QFileInfo::lastModified() const
+
     Returns the date and local time when the file was last modified.
 
     If the file is a symlink, the time of the target file is returned
@@ -1418,12 +1414,10 @@ QDateTime QFileInfo::metadataChangeTime() const
 
     \sa birthTime(), lastRead(), metadataChangeTime(), fileTime()
 */
-QDateTime QFileInfo::lastModified() const
-{
-    return fileTime(QFile::FileModificationTime);
-}
 
 /*!
+    \fn QDateTime QFileInfo::lastRead() const
+
     Returns the date and local time when the file was last read (accessed).
 
     On platforms where this information is not available, returns the
@@ -1434,10 +1428,6 @@ QDateTime QFileInfo::lastModified() const
 
     \sa birthTime(), lastModified(), metadataChangeTime(), fileTime()
 */
-QDateTime QFileInfo::lastRead() const
-{
-    return fileTime(QFile::FileAccessTime);
-}
 
 /*!
     \since 5.10
diff --git a/src/corelib/io/qfileinfo.h b/src/corelib/io/qfileinfo.h
index aea0927310..160c8ea26a 100644
--- a/src/corelib/io/qfileinfo.h
+++ b/src/corelib/io/qfileinfo.h
@@ -44,13 +44,13 @@
 #include <QtCore/qlist.h>
 #include <QtCore/qshareddata.h>
 #include <QtCore/qmetatype.h>
+#include <QtCore/qdatetime.h>
 
 QT_BEGIN_NAMESPACE
 
 
 class QDir;
 class QDirIteratorPrivate;
-class QDateTime;
 class QFileInfoPrivate;
 
 class Q_CORE_EXPORT QFileInfo
@@ -167,11 +167,10 @@ public:
 
     qint64 size() const;
 
-    // ### Qt6: inline these functions
-    QDateTime birthTime() const;
-    QDateTime metadataChangeTime() const;
-    QDateTime lastModified() const;
-    QDateTime lastRead() const;
+    QDateTime birthTime() const { return fileTime(QFile::FileBirthTime); }
+    QDateTime metadataChangeTime() const { return fileTime(QFile::FileMetadataChangeTime); }
+    QDateTime lastModified() const { return fileTime(QFile::FileModificationTime); }
+    QDateTime lastRead() const { return fileTime(QFile::FileAccessTime); }
     QDateTime fileTime(QFile::FileTime time) const;
 
     bool caching() const;