diff --git a/src/Contours.cc b/src/Contours.cc
index af389da..7a8504f 100755
--- a/src/Contours.cc
+++ b/src/Contours.cc
@@ -295,7 +295,7 @@ NAN_METHOD(Contour::Serialize) {
   Local<Array> contours_data = Nan::New<Array>(self->contours.size());
 
   for (std::vector<int>::size_type i = 0; i != self->contours.size(); i++) {
-	  std::vector<cv::Point> points = self->contours[i];
+    std::vector<cv::Point> points = self->contours[i];
     Local<Array> contour_data = Nan::New<Array>(points.size());
 
     for (std::vector<int>::size_type j = 0; j != points.size(); j++) {
@@ -341,7 +341,7 @@ NAN_METHOD(Contour::Deserialize) {
 
   for (int i = 0; i < contours_length; i++) {
     Local<Array> contour_data = Local<Array>::Cast(contours_data->Get(i));
-	std::vector<cv::Point> points;
+    std::vector<cv::Point> points;
 
     int contour_length = contour_data->Length();
     for (int j = 0; j < contour_length; j++) {
diff --git a/src/Matrix.cc b/src/Matrix.cc
index ad56e93..7cb5582 100755
--- a/src/Matrix.cc
+++ b/src/Matrix.cc
@@ -669,7 +669,7 @@ NAN_METHOD(Matrix::ToBuffer) {
 class AsyncToBufferWorker: public Nan::AsyncWorker {
 public:
   AsyncToBufferWorker(Nan::Callback *callback, Matrix* matrix, std::string ext,
-	  std::vector<int> params) :
+    std::vector<int> params) :
       Nan::AsyncWorker(callback),
       matrix(matrix),
       ext(ext),
@@ -2203,13 +2203,13 @@ NAN_METHOD(Matrix::TemplateMatches) {
       int max_x = maxSize.width - 1;
       int max_y = maxSize.height - 1;
       cv::Point top_left = cv::Point(std::max(0, pt.x - min_x_distance),
-		  std::max(0, pt.y - min_y_distance));
+        std::max(0, pt.y - min_y_distance));
       cv::Point top_right = cv::Point(std::min(max_x, pt.x + min_x_distance),
-		  std::max(0, pt.y - min_y_distance));
+        std::max(0, pt.y - min_y_distance));
       cv::Point bottom_left = cv::Point(std::max(0, pt.x - min_x_distance),
-		  std::min(max_y, pt.y + min_y_distance));
+        std::min(max_y, pt.y + min_y_distance));
       cv::Point bottom_right = cv::Point(std::min(max_x, pt.x + min_x_distance),
-		  std::min(max_y, pt.y + min_y_distance));
+        std::min(max_y, pt.y + min_y_distance));
       if (hit_mask.at<double>(top_left.y, top_left.x) > 0)
         continue;
       if (hit_mask.at<double>(top_right.y, top_right.x) > 0)