diff --git a/lib/libmd/Makefile b/lib/libmd/Makefile
index a91fd057c689..0368cfdc740e 100644
--- a/lib/libmd/Makefile
+++ b/lib/libmd/Makefile
@@ -120,7 +120,7 @@ CFLAGS+= -DRMD160_ASM
 .if defined(XAS) || ${MK_BINUTILS_BOOTSTRAP} != "no"
 AFLAGS += --strip-local-absolute
 # Fully unroll all loops in the assembly optimized version
-AFLAGS+= --defsym SKEIN_LOOP=0
+AFLAGS+= --defsym SKEIN_LOOP=0 --defsym SKEIN_USE_ASM=1792
 SRCS+= skein_block_asm.s
 CFLAGS+= -DSKEIN_ASM -DSKEIN_USE_ASM=1792 # list of block functions to replace with assembly: 256+512+1024 = 1792
 .else
diff --git a/sys/modules/crypto/Makefile b/sys/modules/crypto/Makefile
index 5d4509dedf01..8a5335c3a781 100644
--- a/sys/modules/crypto/Makefile
+++ b/sys/modules/crypto/Makefile
@@ -34,7 +34,7 @@ SRCS	+= skein_block_asm.s
 CFLAGS	+= -DSKEIN_ASM -DSKEIN_USE_ASM=1792 # list of block functions to replace with assembly: 256+512+1024 = 1792
 ACFLAGS	+= -DELF -Wa,--noexecstack
 # Fully unroll all loops in the assembly optimized version
-AFLAGS+= --defsym SKEIN_LOOP=0
+AFLAGS+= --defsym SKEIN_LOOP=0 --defsym SKEIN_USE_ASM=1792
 .endif
 SRCS	+= siphash.c
 SRCS	+= gmac.c gfmult.c