diff --git a/core/src/zxing/pdf417/detector/LinesSampler.cpp b/core/src/zxing/pdf417/detector/LinesSampler.cpp
index e5c7915..8b109c9 100644
--- a/core/src/zxing/pdf417/detector/LinesSampler.cpp
+++ b/core/src/zxing/pdf417/detector/LinesSampler.cpp
@@ -26,7 +26,6 @@
 using std::map;
 using std::vector;
 using std::min;
-//using std::abs;
 using zxing::pdf417::detector::LinesSampler;
 using zxing::pdf417::decoder::BitMatrixParser;
 using zxing::Ref;