diff --git a/modules/cnn_3dobj/CMakeLists.txt b/modules/cnn_3dobj/CMakeLists.txt
index 34296cd36..d9a4d6fa6 100755
--- a/modules/cnn_3dobj/CMakeLists.txt
+++ b/modules/cnn_3dobj/CMakeLists.txt
@@ -38,7 +38,7 @@ if(TARGET opencv_test_cnn_3dobj)
   target_link_libraries(opencv_test_cnn_3dobj boost_system)
 endif()
 
-foreach(exe_TGT  demo_classify demo_video demo_sphereview_data demo_model_analysis)
+foreach(exe_TGT  classify video sphereview_data model_analysis)
     if(TARGET example_cnn_3dobj_${exe_TGT})
       target_link_libraries(example_cnn_3dobj_${exe_TGT} boost_system)
     endif()
diff --git a/modules/cnn_3dobj/samples/demo_classify.cpp b/modules/cnn_3dobj/samples/classify.cpp
similarity index 100%
rename from modules/cnn_3dobj/samples/demo_classify.cpp
rename to modules/cnn_3dobj/samples/classify.cpp
diff --git a/modules/cnn_3dobj/samples/demo_model_analysis.cpp b/modules/cnn_3dobj/samples/model_analysis.cpp
similarity index 100%
rename from modules/cnn_3dobj/samples/demo_model_analysis.cpp
rename to modules/cnn_3dobj/samples/model_analysis.cpp
diff --git a/modules/cnn_3dobj/samples/demo_sphereview_data.cpp b/modules/cnn_3dobj/samples/sphereview_data.cpp
similarity index 100%
rename from modules/cnn_3dobj/samples/demo_sphereview_data.cpp
rename to modules/cnn_3dobj/samples/sphereview_data.cpp
diff --git a/modules/cnn_3dobj/samples/demo_video.cpp b/modules/cnn_3dobj/samples/video.cpp
similarity index 100%
rename from modules/cnn_3dobj/samples/demo_video.cpp
rename to modules/cnn_3dobj/samples/video.cpp
diff --git a/modules/cnn_3dobj/tutorials/data_generation/data_generation.markdown b/modules/cnn_3dobj/tutorials/data_generation/data_generation.markdown
index ab1942c08..550146585 100755
--- a/modules/cnn_3dobj/tutorials/data_generation/data_generation.markdown
+++ b/modules/cnn_3dobj/tutorials/data_generation/data_generation.markdown
@@ -12,7 +12,7 @@ In this tutorial you will learn how to
 Code
 ----
 
-@include cnn_3dobj/samples/demo_sphereview_data.cpp
+@include cnn_3dobj/samples/sphereview_data.cpp
 
 Explanation
 -----------
diff --git a/modules/cnn_3dobj/tutorials/feature_classification/classify.markdown b/modules/cnn_3dobj/tutorials/feature_classification/classify.markdown
index 13257bcdd..5bf8288da 100755
--- a/modules/cnn_3dobj/tutorials/feature_classification/classify.markdown
+++ b/modules/cnn_3dobj/tutorials/feature_classification/classify.markdown
@@ -13,7 +13,7 @@ In this tutorial you will learn how to
 Code
 ----
 
-@include cnn_3dobj/samples/demo_classify.cpp
+@include cnn_3dobj/samples/classify.cpp
 
 Explanation
 -----------
diff --git a/modules/cnn_3dobj/tutorials/model_analysis/model_analysis.markdown b/modules/cnn_3dobj/tutorials/model_analysis/model_analysis.markdown
index 2d4550e27..197834b8a 100755
--- a/modules/cnn_3dobj/tutorials/model_analysis/model_analysis.markdown
+++ b/modules/cnn_3dobj/tutorials/model_analysis/model_analysis.markdown
@@ -12,7 +12,7 @@ In this tutorial you will learn how to
 Code
 ----
 
-@include cnn_3dobj/samples/demo_model_analysis.cpp
+@include cnn_3dobj/samples/model_analysis.cpp
 
 Explanation
 -----------