diff --git a/Makefile b/Makefile
index e77d4e602400edda4664970ba7bab382e139bcf9..24c482c64ed071c2518155815cc1fda96967b112 100644
--- a/Makefile
+++ b/Makefile
@@ -7,8 +7,8 @@ CXX = g++
 LD = g++
 EXPAND = lib/tmpl/expand
 
-#CFLAGS := -g -Wall -pthread -iquote.obj/gen -Wno-uninitialized -O2 -DNASSERT
-CFLAGS := -g -Wall -pthread -iquote.obj/gen -Wno-uninitialized 
+CFLAGS := -g -Wall -pthread -iquote.obj/gen -Wno-uninitialized -O2 -DNASSERT
+#CFLAGS := -g -Wall -pthread -iquote.obj/gen -Wno-uninitialized 
 CXXFLAGS := -g -std=c++0x
 LDFLAGS := -levent_pthreads
 ## Debian package: check