diff --git a/bench/Makefile b/bench/Makefile
index 30781eea..4ffd5455 100644
--- a/bench/Makefile
+++ b/bench/Makefile
@@ -1,5 +1,5 @@
 CXX	= g++
-CXXFLAGS	= -g -march=native -Wall -Wextra -pedantic -std=c++11 -pthread -Wl,--no-as-needed  -I../include 
+CXXFLAGS	= --march=native -Wall -Wshadow -Wextra -pedantic -std=c++11 -pthread -Wl,--no-as-needed  -I../include 
 CXX_RELEASE_FLAGS = -O3 -flto