diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index ea893134a18..c8664940d73 100644
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -425,9 +425,10 @@ faster:
'i' form when possible instead of always loading the value in a register.
This saves an instruction and reduces register use.
-Added support for PIC/GOT style tail calls on x86/32 and initial support
- for tail calls on PowerPC 32 (it may also work on ppc64 but not
- thoroughly tested).
+Added support for PIC/GOT style tail calls on X86/32 and initial
+ support for tail calls on PowerPC 32 (it may also work on PowerPC 64 but is
+ not thoroughly tested).