diff --git a/fmpr.h b/fmpr.h
index 124b7fe7..ad2649d2 100644
--- a/fmpr.h
+++ b/fmpr.h
@@ -227,12 +227,23 @@ fmpr_get_mpfr(mpfr_t x, const fmpr_t y, mpfr_rnd_t rnd)
         else mpfr_set_nan(x);
         r = 0;
     }
+    else if (COEFF_IS_MPZ(*fmpr_expref(y)))
+    {
+        printf("exception: exponent too large to convert to mpfr");
+        abort();
+    }
     else
     {
         if (!COEFF_IS_MPZ(*fmpr_manref(y)))
             r = mpfr_set_si_2exp(x, *fmpr_manref(y), *fmpr_expref(y), rnd);
         else
             r = mpfr_set_z_2exp(x, COEFF_TO_PTR(*fmpr_manref(y)), *fmpr_expref(y), rnd);
+
+        if (!mpfr_regular_p(x))
+        {
+            printf("exception: exponent too large to convert to mpfr");
+            abort();
+        }
     }
 
     return r;