diff --git a/makefile b/makefile
index aab6602..4c81c7c 100644
--- a/makefile
+++ b/makefile
@@ -12,6 +12,8 @@ CXX ?= g++
 #CXX=clang++
 
 DDEBUG=-DNDEBUG -s
+#DDEBUG=-g
+
 MARCH=-march=native
 #MARCH=-march=broadwell
 ifeq ($(AVX2),1)
@@ -84,7 +86,7 @@ LDFLAGS += -ldl
 endif
 endif
 
-CFLAGS+=-w -Wall -std=gnu99 -DNDEBUG -DUSE_THREADS  -fstrict-aliasing -Iext -Iext/lz4/lib -Iext/simdcomp/include -Iext/MaskedVByte/include -Iext/LittleIntPacker/include -Iext/streamvbyte/include $(DEFS)
+CFLAGS+=$(DDEBUG) -w -Wall -std=gnu99 -DNDEBUG -DUSE_THREADS  -fstrict-aliasing -Iext -Iext/lz4/lib -Iext/simdcomp/include -Iext/MaskedVByte/include -Iext/LittleIntPacker/include -Iext/streamvbyte/include $(DEFS)
 CXXFLAGS+=$(DDEBUG) $(MARCH) -std=gnu++0x -w -fpermissive -Wall -fno-rtti $(DEFS) -Iext/FastPFor/headers
 
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