diff --git a/tests/expandingbloom_test.py b/tests/expandingbloom_test.py
index f065dde..e0ce310 100755
--- a/tests/expandingbloom_test.py
+++ b/tests/expandingbloom_test.py
@@ -15,7 +15,7 @@
 
 from probables import ExpandingBloomFilter, RotatingBloomFilter
 from probables.exceptions import RotatingBloomFilterError
-from tests.utilities import calc_file_md5
+from tests.utilities import calc_file_md5, different_hash
 
 DELETE_TEMP_FILES = True
 
@@ -38,6 +38,13 @@ def test_ebf_add_lots(self):
             blm.add("{}".format(i), True)
         self.assertEqual(blm.expansions, 9)
 
+    def test_ebf_add_lots_diff_hash(self):
+        """test adding "lots" of elements to force the expansion using a different hash"""
+        blm = ExpandingBloomFilter(est_elements=10, false_positive_rate=0.05, hash_function=different_hash)
+        for i in range(100):
+            blm.add("{}".format(i), True)
+        self.assertEqual(blm.expansions, 9)
+
     def test_ebf_add_lots_without_force(self):
         """testing adding "lots" but force them to be inserted multiple times"""
         blm = ExpandingBloomFilter(est_elements=10, false_positive_rate=0.05)