diff --git a/src/axis/qbarcategoriesaxis.cpp b/src/axis/qbarcategoriesaxis.cpp
index 0be680d..5dc06e7 100644
--- a/src/axis/qbarcategoriesaxis.cpp
+++ b/src/axis/qbarcategoriesaxis.cpp
@@ -92,6 +92,9 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
   Axis emits signal when \a min or \a max of axis has changed.
 */
 
+/*!
+    Constructs an axis object which is a child of \a parent.
+*/
 QBarCategoriesAxis::QBarCategoriesAxis(QObject *parent):
     QAbstractAxis(*new QBarCategoriesAxisPrivate(this),parent)
 {
diff --git a/src/axis/qintervalaxis.cpp b/src/axis/qintervalaxis.cpp
index 1b3df24..4918ce8 100644
--- a/src/axis/qintervalaxis.cpp
+++ b/src/axis/qintervalaxis.cpp
@@ -46,7 +46,9 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
     \endcode
 */
 
-
+/*!
+    Constructs an axis object which is a child of \a parent.
+*/
 QIntervalAxis::QIntervalAxis(QObject *parent):
     QValuesAxis(*new QIntervalAxisPrivate(this),parent)
 {
diff --git a/src/axis/qvaluesaxis.cpp b/src/axis/qvaluesaxis.cpp
index e909186..5d99416 100644
--- a/src/axis/qvaluesaxis.cpp
+++ b/src/axis/qvaluesaxis.cpp
@@ -105,6 +105,9 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
   Whether the nice numbers algorithm is enabled or not for the axis.
 */
 
+/*!
+    Constructs an axis object which is a child of \a parent.
+*/
 QValuesAxis::QValuesAxis(QObject *parent) :
     QAbstractAxis(*new QValuesAxisPrivate(this),parent)
 {