diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2c4497c..d046e61 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,11 +19,11 @@ endif()
 
 find_package(CUDA QUIET REQUIRED)
 find_package(OpenCV QUIET)
-if(${OpenCV_FOUND})
+if(OPENCV)
     message("Compiling with openCV support")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DOPENCV")
 else()
-    message(WARNING "OpenCV not found, compiling without it")
+    message(WARNING "compiling without OpenCV")
 endif()
 
 cuda_include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include ${CUDA_INCLUDE_DIRS})
@@ -36,7 +36,10 @@ cuda_add_library(kernels SHARED src/kernels/activation_elu.cu
 file(GLOB tkdnn_SRC "src/*.cpp")
 set(tkdnn_LIBS kernels ${CUDA_LIBRARIES} ${CUDA_CUBLAS_LIBRARIES} -lcudnn -lnvinfer ${OpenCV_LIBS})
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -std=c++11 -D_GLIBCXX_USE_CXX11_ABI=0")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -std=c++11")
+if(!OPENCV) 
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_GLIBCXX_USE_CXX11_ABI=0") 
+endif()
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include ${CUDA_INCLUDE_DIRS} ${OPENCV_INCLUDE_DIRS})
 add_library(tkDNN SHARED ${tkdnn_SRC})
 target_link_libraries(tkDNN ${tkdnn_LIBS})
diff --git a/src/Region.cpp b/src/Region.cpp
index 73c2778..bb9a81d 100644
--- a/src/Region.cpp
+++ b/src/Region.cpp
@@ -282,7 +282,7 @@ void RegionInterpret::interpretData(dnnType *data_h) {
 void RegionInterpret::showImageResult(dnnType *input_h) {
 
 #ifdef OPENCV
-    dataDim_t dim = net->input_dim;
+    dataDim_t dim = input_dim;
     // read an image
     cv::Mat r(dim.h, dim.w, CV_32F, input_h);
     cv::Mat g(dim.h, dim.w, CV_32F, input_h + dim.h*dim.w);