diff --git a/gcc/config/m68k/m68k.md b/gcc/config/m68k/m68k.md
index d95229f5b7a..672278a35d4 100644
--- a/gcc/config/m68k/m68k.md
+++ b/gcc/config/m68k/m68k.md
@@ -2089,7 +2089,7 @@
   [(set (match_operand:SI 0 "general_operand" "=dm")
     (plus:SI (lshiftrt:SI (match_operand:SI 1 "general_operand" "rm")
             (const_int 31))
-        (match_operand:SI 2 "general_operand" "1")))]
+        (match_dup 1)))]
   ""
   "*
 {