diff --git a/ccv/sheet1/opencv/CMakeLists.txt b/ccv/sheet1/opencv/CMakeLists.txt
index 74680c4..3388e40 100644
--- a/ccv/sheet1/opencv/CMakeLists.txt
+++ b/ccv/sheet1/opencv/CMakeLists.txt
@@ -1 +1,3 @@
+find_package( OpenCV REQUIRED )
 add_executable(opencv opencv.cpp)
+target_link_libraries( opencv ${OpenCV_LIBS} )