diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index 2c28e13a..e1b9f6e4 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -5889,7 +5889,7 @@ VpMidRound(Real *y, unsigned short f, ssize_t nf)
     exptoadd=0;
     if (nf < 0) {
 	/* rounding position too left(large). */
-	if (f != VP_ROUND_CEIL && f != VP_ROUND_FLOOR) {
+	if (f != VP_ROUND_UP && f != VP_ROUND_CEIL && f != VP_ROUND_FLOOR) {
 	    VpSetZero(y, VpGetSign(y)); /* truncate everything */
 	    return 0;
 	}
diff --git a/test/bigdecimal/test_bigdecimal.rb b/test/bigdecimal/test_bigdecimal.rb
index fe92ecdf..502d9345 100644
--- a/test/bigdecimal/test_bigdecimal.rb
+++ b/test/bigdecimal/test_bigdecimal.rb
@@ -1541,6 +1541,10 @@ def test_round
       assert_equal(x.round(0, const), x.round(0, sym))
     end
 
+    assert_equal(1, BigDecimal("1e-10").round(0, BigDecimal::ROUND_UP))
+    assert_equal(-1, BigDecimal("-1e-10").round(0, BigDecimal::ROUND_UP))
+    assert_equal(10**10, BigDecimal("5").round(-10, BigDecimal::ROUND_UP))
+
     bug3803 = '[ruby-core:32136]'
     15.times do |n|
       x = BigDecimal("5#{'0'*n}1")