diff --git a/src/App/DocumentObserver.h b/src/App/DocumentObserver.h
index 514bdf8387..c1070d6894 100644
--- a/src/App/DocumentObserver.h
+++ b/src/App/DocumentObserver.h
@@ -377,9 +377,9 @@ public:
     }
     /*!
      * \brief operator ->
-     * \return pointer to the document
+     * \return pointer to the document object
      */
-    T* operator->() {
+    T* operator->() const {
         return ptr.get<T>();
     }
     /*!
diff --git a/src/Gui/DocumentObserver.h b/src/Gui/DocumentObserver.h
index 4c550ac620..c923185cd3 100644
--- a/src/Gui/DocumentObserver.h
+++ b/src/Gui/DocumentObserver.h
@@ -255,9 +255,9 @@ public:
     }
     /*!
      * \brief operator ->
-     * \return pointer to the document
+     * \return pointer to the view provider
      */
-    T* operator->() {
+    T* operator->() const {
         return ptr.get<T>();
     }
     /*!