diff --git a/calibrationCharuco.cpp b/calibrationCharuco.cpp
index 2428509..1934990 100644
--- a/calibrationCharuco.cpp
+++ b/calibrationCharuco.cpp
@@ -104,7 +104,7 @@ int main(int argc, char *argv[]) {
     if(parser.get<bool>("zt")) calibrationFlags |= CALIB_ZERO_TANGENT_DIST;
     if(parser.get<bool>("pc")) calibrationFlags |= CALIB_FIX_PRINCIPAL_POINT;
 
-    Ptr<aruco::DetectorParameters> detectorParams;
+    Ptr<aruco::DetectorParameters> detectorParams = cv::aruco::DetectorParameters::create();
     /*if(parser.has("dp")) {
         FileStorage fs(parser.get<string>("dp"), FileStorage::READ);
         bool readOk = aruco::DetectorParameters::readDetectorParameters(fs.root(), detectorParams);