diff --git a/tests/some_mols_zinc.txt b/tests/some_mols_zinc.txt
index ce27778..3b45463 100644
--- a/tests/some_mols_zinc.txt
+++ b/tests/some_mols_zinc.txt
@@ -1,4 +1,3 @@
-c1ccc(c(c1)C(=O)OCC[C@@H]2CCCC[NH2+]2)N ZINC000000000638_1
 Cc1ccccc1OC[C@@H](C[NH+]2CCC=CC2)O ZINC000000000794_1
 COc1cc(cc(c1OC)OC)/C=C/C(=O)N ZINC000000001157_1
 c1cc(=O)[nH]cc1C(=O)N2CCCCC2 ZINC000000003546_1
diff --git a/tests/test_molbloom.py b/tests/test_molbloom.py
index 95b9e15..7cb4031 100644
--- a/tests/test_molbloom.py
+++ b/tests/test_molbloom.py
@@ -59,7 +59,7 @@ def test_fpr():
                     if molbloom.buy(rs, catalog="zinc-instock-mini"):
                         fp += 1
                     count += 1
-    assert count > 1000
+    assert count > 1000 and fp / count < 0.1
     print("False positive rate for instock mini {:f} (N={})".format(fp / count, count))
 
     count = 0
@@ -77,7 +77,7 @@ def test_fpr():
                     if molbloom.buy(rs, catalog="zinc20"):
                         fp += 1
                     count += 1
-    assert count > 1000 and fn < 5
+    assert count > 1000 and fn == 0
     print("False positive rate for zinc all is {:f} (N={})".format(fp / count, count))