diff --git a/gcc/config/convex/convex.md b/gcc/config/convex/convex.md
index 3ff36edcd33..ca4978f0606 100644
--- a/gcc/config/convex/convex.md
+++ b/gcc/config/convex/convex.md
@@ -260,7 +260,7 @@
 (define_insn ""
   [(set (match_operand:DI 0 "register_operand" "=d")
 	(match_operand:DI 1 "const_double_operand" "F"))]
-  "CONST_DOUBLE_MEM (operands[1]) == const0_rtx"
+  "mem_for_const_double (operands[1]) == 0"
   "ld.u %u1,%0\;ld.w %v1,%0"
   [(set_attr "type" "xalu")])