diff --git a/src/runtime/sys_openbsd_amd64.s b/src/runtime/sys_openbsd_amd64.s
index 213ffc1937..381354ea09 100644
--- a/src/runtime/sys_openbsd_amd64.s
+++ b/src/runtime/sys_openbsd_amd64.s
@@ -306,7 +306,7 @@ TEXT runtime·sigaltstack(SB),NOSPLIT,$-8
 
 // set tls base to DI
 TEXT runtime·settls(SB),NOSPLIT,$0
-	// adjust for ELF: wants to use -16(FS) and -8(FS) for g and m
+	// adjust for ELF: wants to use -8(FS) for g
 	ADDQ	$8, DI
 	MOVQ	$329, AX		// sys___settcb
 	SYSCALL