diff --git a/src/axis/categoriesaxis/qbarcategoriesaxis.cpp b/src/axis/categoriesaxis/qbarcategoriesaxis.cpp
index 926144c..5cc4fd6 100644
--- a/src/axis/categoriesaxis/qbarcategoriesaxis.cpp
+++ b/src/axis/categoriesaxis/qbarcategoriesaxis.cpp
@@ -205,6 +205,21 @@ void QBarCategoriesAxis::insert(int index, const QString &category)
 }
 
 /*!
+    Replaces \a oldCategory with \a newCategory.
+    If \a oldCategory does not exits on the axis nothing is done.
+*/
+void QBarCategoriesAxis::replace(const QString &oldCategory, const QString &newCategory)
+{
+    Q_D(QBarCategoriesAxis);
+    int pos = d->m_categories.indexOf(oldCategory);
+    if (pos != -1) {
+        d->m_categories.replace(pos, newCategory);
+        d->emitUpdated();
+        emit categoriesChanged();
+    }
+}
+
+/*!
   Removes all categories.
  */
 void QBarCategoriesAxis::clear()
diff --git a/src/axis/categoriesaxis/qbarcategoriesaxis.h b/src/axis/categoriesaxis/qbarcategoriesaxis.h
index 03fe182..3c06356 100644
--- a/src/axis/categoriesaxis/qbarcategoriesaxis.h
+++ b/src/axis/categoriesaxis/qbarcategoriesaxis.h
@@ -47,6 +47,7 @@ public:
     void append(const QString &category);
     void remove(const QString &category);
     void insert(int index, const QString &category);
+    void replace(const QString &oldCategory, const QString &newCategory);
     void clear();
     void setCategories(const QStringList &categories);
     QStringList categories();