diff --git a/README.md b/README.md
index f612d2b..c586c64 100755
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ You'll need OpenCV 2.3.1 or newer installed before installing node-opencv.
 ## Specific for macOS
 Install OpenCV using brew
 ```bash
+brew install pkg-config
 brew install opencv@2
 brew link --force opencv@2
 ```
@@ -135,7 +136,7 @@ var mat = new cv.Matrix.Eye(4,4); // Create identity matrix
 mat.get(0,0) // 1
 
 mat.row(0)  // [1,0,0,0]
-mat.col(4)  // [0,0,0,1]
+mat.col(3)  // [0,0,0,1]
 ```
 
 ##### Save
diff --git a/src/OpenCV.h b/src/OpenCV.h
index 6ef42db..01aa6ec 100755
--- a/src/OpenCV.h
+++ b/src/OpenCV.h
@@ -22,7 +22,7 @@
 #include <node_buffer.h>
 #include <opencv2/opencv.hpp>
 
-#if ((CV_MAJOR_VERSION <= 2) && (CV_MINOR_VERSION <= 4) && (CV_MINOR_VERSION < 10))
+#if ((CV_MAJOR_VERSION <= 2) && (CV_MINOR_VERSION <= 4))
 #include <opencv/highgui.h>
 #else
 #include <opencv2/imgcodecs/imgcodecs_c.h>