diff --git a/sandbox/Makefile b/sandbox/Makefile
index 360a8bc5..0799ab7c 100644
--- a/sandbox/Makefile
+++ b/sandbox/Makefile
@@ -8,7 +8,8 @@ BINDIR ?= $(PREFIX)/bin
 SBINDIR ?= $(PREFIX)/sbin
 MANDIR ?= $(PREFIX)/share/man
 SHAREDIR ?= $(PREFIX)/share/sandbox
-override CFLAGS += -DPACKAGE="\"policycoreutils\"" -Wall -Werror -Wextra -W
+CFLAGS ?= -Werror -Wall -Wextra
+override CFLAGS += -DPACKAGE="\"policycoreutils\""
 override LDLIBS += -lselinux -lcap-ng
 SEUNSHARE_OBJS = seunshare.o