diff --git a/release/Makefile b/release/Makefile
index e280e0a90e9..e0f0b6ea0eb 100644
--- a/release/Makefile
+++ b/release/Makefile
@@ -1051,8 +1051,7 @@ doMFSKERN:
 	cd ${.CURDIR}/..; \
 	KERNEL_KO=BOOTMFS KODIR= \
 	    ${CROSSMAKE} ${KERNEL_FLAGS} -DNO_MODULES -DNO_KERNELCLEAN \
-	    KERNCONF=BOOTMFS COPTFLAGS="-Os -fno-strict-aliasing -pipe" \
-	    -DNO_CPU_COPTFLAGS \
+	    KERNCONF=BOOTMFS COPTFLAGS="-Os -pipe" -DNO_CPU_COPTFLAGS \
 	    buildkernel reinstallkernel \
 	    DESTDIR=${RD}/kernels
 	[ -r ${.CURDIR}/../sys/${TARGET}/conf/BOOTMFS.hints ] && \