diff --git a/gcc/rtl.def b/gcc/rtl.def
index 1e45157b450..85a91e8e32f 100644
--- a/gcc/rtl.def
+++ b/gcc/rtl.def
@@ -845,7 +845,7 @@ DEF_RTL_EXPR(RANGE_LIVE, "range_live", "bi", 'x')
 /* A unary `__builtin_constant_p' expression.  These are only emitted
    during RTL generation, and then only if optimize > 0.  They are
    eliminated by the first CSE pass. */
-DEF_RTL_EXPR(CONSTANT_P_RTX, "constant_p", "e", 'x')
+DEF_RTL_EXPR(CONSTANT_P_RTX, "constant_p_rtx", "e", 'x')
 
 /*
 Local variables: