diff --git a/tests/test_reports_balance.py b/tests/test_reports_balance.py
index d827018f52d459839657bda2acf7a5b7bd93b473..8ab0a587b9cd9eb7089af14fcfd544200009a73d 100644
--- a/tests/test_reports_balance.py
+++ b/tests/test_reports_balance.py
@@ -92,6 +92,8 @@ def test_mixed_balance():
     ({'JPY': 10}, False),
     ({'JPY': 10, 'BRL': 0}, False),
     ({'JPY': 10, 'BRL': 20}, False),
+    ({'USD': '0.00015'}, True),
+    ({'EUR': '-0.00052'}, True),
 ])
 def test_eq_zero(mapping, expected):
     balance = core.Balance(amounts_from_map(mapping))
@@ -108,6 +110,8 @@ def test_eq_zero(mapping, expected):
     ({'JPY': 10}, True),
     ({'JPY': 10, 'BRL': 0}, True),
     ({'JPY': 10, 'BRL': 20}, True),
+    ({'USD': '0.00015'}, True),
+    ({'EUR': '-0.00052'}, True),
 ])
 def test_ge_zero(mapping, expected):
     balance = core.Balance(amounts_from_map(mapping))
@@ -123,6 +127,8 @@ def test_ge_zero(mapping, expected):
     ({'JPY': 10}, False),
     ({'JPY': 10, 'BRL': 0}, False),
     ({'JPY': 10, 'BRL': 20}, False),
+    ({'USD': '0.00015'}, True),
+    ({'EUR': '-0.00052'}, True),
 ])
 def test_le_zero(mapping, expected):
     balance = core.Balance(amounts_from_map(mapping))