diff --git a/modules/video/src/bgfg_KNN.cpp b/modules/video/src/bgfg_KNN.cpp
index 1ddf1b7d51..5ec2266921 100644
--- a/modules/video/src/bgfg_KNN.cpp
+++ b/modules/video/src/bgfg_KNN.cpp
@@ -214,6 +214,8 @@ public:
         }
     }
 
+    virtual String getDefaultName() const CV_OVERRIDE { return "BackgroundSubtractor_KNN"; }
+
     virtual int getHistory() const CV_OVERRIDE { return history; }
     virtual void setHistory(int _nframes) CV_OVERRIDE { history = _nframes; }
 
diff --git a/modules/video/src/bgfg_gaussmix2.cpp b/modules/video/src/bgfg_gaussmix2.cpp
index 69e4baf657..f7b26ef06b 100644
--- a/modules/video/src/bgfg_gaussmix2.cpp
+++ b/modules/video/src/bgfg_gaussmix2.cpp
@@ -236,6 +236,8 @@ public:
         }
     }
 
+    virtual String getDefaultName() const CV_OVERRIDE { return "BackgroundSubtractor_MOG2"; }
+
     virtual int getHistory() const CV_OVERRIDE { return history; }
     virtual void setHistory(int _nframes) CV_OVERRIDE { history = _nframes; }