diff --git a/samples/c/CMakeLists.txt b/samples/c/CMakeLists.txt
index f062a986cf..fd29b0bcb4 100644
--- a/samples/c/CMakeLists.txt
+++ b/samples/c/CMakeLists.txt
@@ -12,6 +12,7 @@ if (BUILD_EXAMPLES)
     
 	include_directories(
 		"${CMAKE_SOURCE_DIR}/modules/core/include"
+		"${CMAKE_SOURCE_DIR}/modules/flann/include"
 		"${CMAKE_SOURCE_DIR}/modules/imgproc/include"
 		"${CMAKE_SOURCE_DIR}/modules/video/include"
 		"${CMAKE_SOURCE_DIR}/modules/highgui/include"
diff --git a/samples/cpp/CMakeLists.txt b/samples/cpp/CMakeLists.txt
index 78be8d1c86..cf4810f597 100644
--- a/samples/cpp/CMakeLists.txt
+++ b/samples/cpp/CMakeLists.txt
@@ -8,6 +8,7 @@ if (BUILD_EXAMPLES)
 
     include_directories(
         "${CMAKE_SOURCE_DIR}/modules/core/include"
+        "${CMAKE_SOURCE_DIR}/modules/flann/include"
         "${CMAKE_SOURCE_DIR}/modules/imgproc/include"
         "${CMAKE_SOURCE_DIR}/modules/video/include"
         "${CMAKE_SOURCE_DIR}/modules/highgui/include"