1 files changed, 1 insertions, 1 deletions
diff --git a/src/add1.c b/src/add1.c
index 9f2859690..1e61eb905 100644
--- a/src/add1.c
+++ b/src/add1.c
@@ -41,7 +41,7 @@ mpfr_add1 (mpfr_ptr a, mpfr_srcptr b, mpfr_srcptr c, mpfr_rnd_t rnd_mode)
 
   if (MPFR_UNLIKELY (MPFR_IS_UBF (b)))
     {
-      exp = mpfr_ubf_zexp2exp (MPFR_ZEXP (b));
+      exp = MPFR_UBF_GET_EXP (b);
       if (exp > __gmpfr_emax)
         return mpfr_overflow (a, rnd_mode, MPFR_SIGN (b));;
     }