diff --git a/src/App/Document.cpp b/src/App/Document.cpp
index a72cc89188..bd99723f0f 100644
--- a/src/App/Document.cpp
+++ b/src/App/Document.cpp
@@ -1556,7 +1556,7 @@ public:
     BackupPolicy() {
         policy = Standard;
         numberOfFiles = 1;
-        useFCBakExtension = false;
+        useFCBakExtension = true;
         saveBackupDateFormat = "%Y%m%d-%H%M%S";
     }
     ~BackupPolicy() = default;
@@ -1928,7 +1928,7 @@ bool Document::saveToFile(const char* filename) const
             count_bak = -1;
         }
         bool useFCBakExtension = App::GetApplication().GetParameterGroupByPath
-            ("User parameter:BaseApp/Preferences/Document")->GetBool("UseFCBakExtension",false);
+            ("User parameter:BaseApp/Preferences/Document")->GetBool("UseFCBakExtension",true);
         std::string saveBackupDateFormat = App::GetApplication().GetParameterGroupByPath
             ("User parameter:BaseApp/Preferences/Document")->GetASCII("SaveBackupDateFormat","%Y%m%d-%H%M%S");
 
diff --git a/src/Gui/DlgSettingsDocument.ui b/src/Gui/DlgSettingsDocument.ui
index 2d90093047..687c69eee3 100644
--- a/src/Gui/DlgSettingsDocument.ui
+++ b/src/Gui/DlgSettingsDocument.ui
@@ -511,6 +511,9 @@ Common sizes are 128, 256 and 512</string>
            <string>Backup files will get extension '.FCbak' and file names
 get date suffix according to the specified format</string>
           </property>
+          <property name="checked">
+           <bool>true</bool>
+          </property>
           <property name="text">
            <string>Use date and FCBak extension</string>
           </property>