diff --git a/libselinux/src/Makefile b/libselinux/src/Makefile
index 6263d113..1a9223c0 100644
--- a/libselinux/src/Makefile
+++ b/libselinux/src/Makefile
@@ -64,7 +64,7 @@ ifeq ($(COMPILER), gcc)
 EXTRA_CFLAGS = -fipa-pure-const -Wlogical-op -Wpacked-bitfield-compat -Wsync-nand \
 	-Wcoverage-mismatch -Wcpp -Wformat-contains-nul -Wnormalized=nfc -Wsuggest-attribute=const \
 	-Wsuggest-attribute=noreturn -Wsuggest-attribute=pure -Wtrampolines -Wjump-misses-init \
-	-Wno-suggest-attribute=pure -Wno-suggest-attribute=const -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE
+	-Wno-suggest-attribute=pure -Wno-suggest-attribute=const -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
 else
 EXTRA_CFLAGS = -Wunused-command-line-argument
 endif
diff --git a/libselinux/utils/Makefile b/libselinux/utils/Makefile
index 890ff36f..e7a75121 100644
--- a/libselinux/utils/Makefile
+++ b/libselinux/utils/Makefile
@@ -30,7 +30,7 @@ CFLAGS ?= -O -Wall -W -Wundef -Wformat-y2k -Wformat-security -Winit-self -Wmissi
           -Wformat-extra-args -Wformat-zero-length -Wformat=2 -Wmultichar \
           -Woverflow -Wpointer-to-int-cast -Wpragmas \
           -Wno-missing-field-initializers -Wno-sign-compare \
-          -Wno-format-nonliteral -Wframe-larger-than=$(MAX_STACK_SIZE) -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE \
+          -Wno-format-nonliteral -Wframe-larger-than=$(MAX_STACK_SIZE) -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 \
           -fstack-protector-all --param=ssp-buffer-size=4 -fexceptions \
           -fasynchronous-unwind-tables -fdiagnostics-show-option -funit-at-a-time \
           -Werror -Wno-aggregate-return -Wno-redundant-decls \