diff --git a/blake2b/blake2b_amd64.s b/blake2b/blake2b_amd64.s
index 7a876ba..95aec80 100644
--- a/blake2b/blake2b_amd64.s
+++ b/blake2b/blake2b_amd64.s
@@ -20,7 +20,7 @@ GLOBL ·iv2<>(SB), (NOPTR+RODATA), $16
 
 DATA ·iv3<>+0x00(SB)/8, $0x1f83d9abfb41bd6b
 DATA ·iv3<>+0x08(SB)/8, $0x5be0cd19137e2179
-GLOBL ·iv3<>(SB), (NOPTR+RODATA), $32
+GLOBL ·iv3<>(SB), (NOPTR+RODATA), $16
 
 DATA ·c40<>+0x00(SB)/8, $0x0201000706050403
 DATA ·c40<>+0x08(SB)/8, $0x0a09080f0e0d0c0b