diff --git a/app/src/main/cpp/PhoneDevice.cpp b/app/src/main/cpp/PhoneDevice.cpp
index 92f5882e..0e1c4f9b 100644
--- a/app/src/main/cpp/PhoneDevice.cpp
+++ b/app/src/main/cpp/PhoneDevice.cpp
@@ -1191,7 +1191,7 @@ bool CPhoneDevice::OnImageReady(cv::Mat& mat)
         }
     }
 
-#ifdef _DEBUG
+#ifdef OUTPUT_CAMERA_DBG_INFO
 
     cv::Scalar scalarRed(0, 0, 255);  // red
 
@@ -1216,7 +1216,7 @@ bool CPhoneDevice::OnImageReady(cv::Mat& mat)
     textSize = ft2->getTextSize(str, fs, -1, &baseline);
     ft2->putText(mat, str, cv::Point(0, mat.rows - fs - 20 * ratio),
                  fs, scalarRed, -1, cv::LINE_AA, false);
-#endif
+#endif // OUTPUT_CAMERA_DBG_INFO
 
     for (vector<OSD_INFO>::const_iterator it = mOsds.cbegin(); it != mOsds.cend(); ++it)
     {