src/sync/atomic/doc.go | 3 ++-

diff --git a/src/sync/atomic/doc.go b/src/sync/atomic/doc.go
index 7c007d7a150c65c1c72db4b100e77480479500b5..108b76b8049039b990860057c01048a415f3271e 100644
--- a/src/sync/atomic/doc.go
+++ b/src/sync/atomic/doc.go
@@ -47,7 +47,8 @@ // BUG(rsc): On x86-32, the 64-bit functions use instructions unavailable before the Pentium MMX.
 //
 // On non-Linux ARM, the 64-bit functions use instructions unavailable before the ARMv6k core.
 //
-// On both ARM and x86-32, it is the caller's responsibility to arrange for 64-bit
+// On ARM, x86-32, and 32-bit MIPS,
+// it is the caller's responsibility to arrange for 64-bit
 // alignment of 64-bit words accessed atomically. The first word in a
 // variable or in an allocated struct, array, or slice can be relied upon to be
 // 64-bit aligned.