diff --git a/src/compiler/x86/insts.lisp b/src/compiler/x86/insts.lisp
index ec29ea7995349e7fad6ea153b3efe61feb87b755..0a63c0bf831d7e423aefd79e843fb9c1b3623c5f 100644
--- a/src/compiler/x86/insts.lisp
+++ b/src/compiler/x86/insts.lisp
@@ -3146,6 +3146,8 @@
   ;; logical
   (define-regular-sse-inst andpd    #x66 #x54 t)
   (define-regular-sse-inst andps    nil  #x54)
+  (define-regular-sse-inst orpd     #x66 #x56 t)
+  (define-regular-sse-inst orps     nil  #x56)
   (define-regular-sse-inst xorpd    #x66 #x57 t)
   (define-regular-sse-inst xorps    nil  #x57)
   ;; comparison