diff --git a/src/App/MergeDocuments.cpp b/src/App/MergeDocuments.cpp
index efbb573399..819a7c364e 100644
--- a/src/App/MergeDocuments.cpp
+++ b/src/App/MergeDocuments.cpp
@@ -80,6 +80,24 @@ protected:
                         it->second = jt->second;
                 }
             }
+            // update the expression if name of the object is used
+            else if (LocalName == "Expression") {
+                std::map<std::string, std::string>::iterator it = AttrMap.find("expression");
+                if (it != AttrMap.end()) {
+                    // search for the part before the first dot that should be the object name.
+                    std::string expression = it->second;
+                    std::string::size_type dotpos = expression.find_first_of(".");
+                    if (dotpos != std::string::npos) {
+                        std::string name = expression.substr(0, dotpos);
+                        std::map<std::string, std::string>::const_iterator jt = nameMap.find(name);
+                        if (jt != nameMap.end()) {
+                            std::string newexpression = jt->second;
+                            newexpression += expression.substr(dotpos);
+                            it->second = newexpression;
+                        }
+                    }
+                }
+            }
         }
     }
 
diff --git a/src/Gui/MergeDocuments.cpp b/src/Gui/MergeDocuments.cpp
index a21878209e..93316f4fa5 100644
--- a/src/Gui/MergeDocuments.cpp
+++ b/src/Gui/MergeDocuments.cpp
@@ -80,6 +80,24 @@ protected:
                         it->second = jt->second;
                 }
             }
+            // update the expression if name of the object is used
+            else if (LocalName == "Expression") {
+                std::map<std::string, std::string>::iterator it = AttrMap.find("expression");
+                if (it != AttrMap.end()) {
+                    // search for the part before the first dot that should be the object name.
+                    std::string expression = it->second;
+                    std::string::size_type dotpos = expression.find_first_of(".");
+                    if (dotpos != std::string::npos) {
+                        std::string name = expression.substr(0, dotpos);
+                        std::map<std::string, std::string>::const_iterator jt = nameMap.find(name);
+                        if (jt != nameMap.end()) {
+                            std::string newexpression = jt->second;
+                            newexpression += expression.substr(dotpos);
+                            it->second = newexpression;
+                        }
+                    }
+                }
+            }
         }
     }