diff --git a/core/preprocess/nvdec-extractframe/CMakeLists.txt b/core/preprocess/nvdec-extractframe/CMakeLists.txt
index 25ad94f9a5551c19356379a33ed333fe7b400eb7..4a890413b033ea7e2cf54e66ece1708e1cbe2d7a 100644
--- a/core/preprocess/nvdec-extractframe/CMakeLists.txt
+++ b/core/preprocess/nvdec-extractframe/CMakeLists.txt
@@ -32,7 +32,7 @@ include_directories(./ffmpeginclude/include)
 # include_directories(./pybind11/include)
 include_directories(./pythoninclude/python2.7/)
 include_directories(./Utils)
-include_directories(${CUDA_TOOL_KIT_INCLUDE})
+include_directories(${CUDA_TOOLKIT_INCLUDE})
 
 # Preprocessor libs.
 file(GLOB LIB_FILES ${CMAKE_SOURCE_DIR}/core/preprocess/nvdec-extractframe/lib/*.so)