diff --git a/ChangeLog b/ChangeLog
index 8df2817cdc..6dfe82554a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2015-10-07  Joseph Myers  <joseph@codesourcery.com>
 
+	* sysdeps/mips/mips64/Implies: Use ieee754/dbl-64/wordsize-64.
+	* sysdeps/ieee754/dbl-64/wordsize-64/s_issignaling.c
+	(__issignaling) [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Remove #error.
+
 	[BZ #19079]
 	* sysdeps/ieee754/dbl-64/wordsize-64/s_lround.c: Restore previous
 	file, conditioned on [!_LP64].
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_issignaling.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_issignaling.c
index 67d77d5732..53a8f11fb8 100644
--- a/sysdeps/ieee754/dbl-64/wordsize-64/s_issignaling.c
+++ b/sysdeps/ieee754/dbl-64/wordsize-64/s_issignaling.c
@@ -25,7 +25,6 @@ __issignaling (double x)
   u_int64_t xi;
   EXTRACT_WORDS64 (xi, x);
 #ifdef HIGH_ORDER_BIT_IS_SET_FOR_SNAN
-# error untested
   /* We only have to care about the high-order bit of x's significand, because
      having it set (sNaN) already makes the significand different from that
      used to designate infinity.  */
diff --git a/sysdeps/mips/mips64/Implies b/sysdeps/mips/mips64/Implies
index 826ff1541f..b476b8b298 100644
--- a/sysdeps/mips/mips64/Implies
+++ b/sysdeps/mips/mips64/Implies
@@ -1,4 +1,5 @@
 # MIPS uses IEEE 754 floating point.
 mips/ieee754
 ieee754/flt-32
+ieee754/dbl-64/wordsize-64
 ieee754/dbl-64