diff --git a/stackalytics/processor/driverlog.py b/stackalytics/processor/driverlog.py
index e5459ff55..27d78639e 100644
--- a/stackalytics/processor/driverlog.py
+++ b/stackalytics/processor/driverlog.py
@@ -44,6 +44,7 @@ def find_ci_result(review, ci_map):
 
     review_id = review['id']
     review_number = review['number']
+    ci_already_seen = set()
 
     for comment in reversed(review.get('comments') or []):
         reviewer_id = comment['reviewer'].get('username')
@@ -76,9 +77,13 @@ def find_ci_result(review, ci_map):
             result = _find_vote(review, ci['id'], patch_set_number)
 
         if result is not None:
-            is_merged = (review['status'] == 'MERGED' and
-                         patch_set_number == review['patchSets'][-1]
-                         ['number'])
+            is_merged = (
+                review['status'] == 'MERGED' and
+                patch_set_number == review['patchSets'][-1]['number'] and
+                ci['id'] not in ci_already_seen)
+
+            ci_already_seen.add(ci['id'])
+
             yield {
                 'reviewer': comment['reviewer'],
                 'ci_result': result,
diff --git a/tests/unit/test_driverlog.py b/tests/unit/test_driverlog.py
new file mode 100644
index 000000000..b4483bbe4
--- /dev/null
+++ b/tests/unit/test_driverlog.py
@@ -0,0 +1,79 @@
+# Copyright (c) 2013 Mirantis Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import testtools
+
+from stackalytics.processor import driverlog
+
+
+class TestDriverlog(testtools.TestCase):
+    def setUp(self):
+        super(TestDriverlog, self).setUp()
+
+    def test_find_ci_result_voting_ci(self):
+        review = {
+            'record_type': 'review',
+            'id': 'I1045730e47e9e6ad31fcdfbaefdad77e2f3b2c3e',
+            'module': 'nova',
+            'branch': 'master',
+            'status': 'NEW',
+            'number': '97860',
+            'patchSets': [
+                {'number': '1',
+                 'approvals': [
+                     {'type': 'Verified', 'description': 'Verified',
+                      'value': '1', 'grantedOn': 1234567890 - 1,
+                      'by': {
+                          'name': 'Batman',
+                          'email': 'batman@openstack.org',
+                          'username': 'batman'}},
+                     {'type': 'Verified', 'description': 'Verified',
+                      'value': '-1', 'grantedOn': 1234567890,
+                      'by': {
+                          'name': 'Pikachu',
+                          'email': 'pikachu@openstack.org',
+                          'username': 'pikachu'}},
+                 ]}],
+            'comments': [
+                {'message': 'Patch Set 1: build successful',
+                 'reviewer': {'username': 'batman'},
+                 'timestamp': 1234567890}
+            ]}
+
+        ci_map = {
+            'batman': {
+                'name': 'Batman Driver',
+                'vendor': 'Gotham Inc',
+                'ci': {
+                    'id': 'batman'
+                }
+            }
+        }
+
+        res = list(driverlog.find_ci_result(review, ci_map))
+
+        expected_result = {
+            'reviewer': {'username': 'batman'},
+            'ci_result': True,
+            'is_merged': False,
+            'message': 'build successful',
+            'date': 1234567890,
+            'review_id': 'I1045730e47e9e6ad31fcdfbaefdad77e2f3b2c3e',
+            'review_number': '97860',
+            'driver_name': 'Batman Driver',
+            'driver_vendor': 'Gotham Inc',
+        }
+        self.assertEqual(1, len(res), 'One CI result is expected')
+        self.assertEqual(expected_result, res[0])