diff --git a/Makefile b/Makefile
index 9494732..9218dae 100644
--- a/Makefile
+++ b/Makefile
@@ -21,19 +21,11 @@ ifeq ($(PKG_CONFIG),)
 $(error "Install pkg-config to make it work")
 endif
 
-CC ?= gcc
-CXX ?= g++
-
-COMMON_FLAGS += -O2 -c \
-	-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 \
-	-fPIE \
-	-Wformat -Wformat-security -Wno-format-nonliteral \
-	-Wall -Wextra -Werror \
-	-Ikafel/include
-
-CXXFLAGS += $(USER_DEFINES) $(COMMON_FLAGS) $(shell pkg-config --cflags protobuf) \
-	-std=c++11 -fno-exceptions -Wno-unused -Wno-unused-parameter
-LDFLAGS += -pie -Wl,-z,noexecstack -lpthread $(shell pkg-config --libs protobuf)
+COMMON_FLAGS += -c -D_GNU_SOURCE -Ikafel/include
+
+CXXFLAGS += $(COMMON_FLAGS) $(shell pkg-config --cflags protobuf) \
+	-std=c++11 -fno-exceptions
+LDFLAGS += -lpthread $(shell pkg-config --libs protobuf)
 
 BIN = nsjail
 LIBS = kafel/libkafel.a