diff --git a/src/Matrix.cc b/src/Matrix.cc
index d95ab1e..72d54bd 100755
--- a/src/Matrix.cc
+++ b/src/Matrix.cc
@@ -208,6 +208,9 @@ double Matrix::DblGet(cv::Mat mat, int i, int j) {
     case CV_64FC1:
       val = mat.at<double>(i, j);
       break;
+    case CV_32FC1:
+      val = mat.at<float>(i, j);
+      break;
     default:
       val = mat.at<double>(i, j);
       break;
diff --git a/test/unit.js b/test/unit.js
index c28ad04..97767f3 100755
--- a/test/unit.js
+++ b/test/unit.js
@@ -103,8 +103,10 @@ test('Matrix functions', function(assert) {
   // convertTo
   var mat = new cv.Matrix(75, 75, cv.Constants.CV_32F, [2.0]);
   var matNew = new cv.Matrix(75, 75, cv.Constants.CV_8U);
-  mat.convertTo(matNew, cv.Constants.CV_8U, 2, 1);
-  assert.equal(matNew.pixel(0, 0), 5);
+  var alpha = 2;
+  var beta = 1;
+  mat.convertTo(matNew, cv.Constants.CV_8U, alpha, beta);
+  assert.equal(matNew.pixel(0, 0), mat.get(0, 0)*alpha + beta);
 
   // reshape
   mat = new cv.Matrix(75, 75, cv.Constants.CV_8UC1);