diff --git a/openstack_health/run_aggregator.py b/openstack_health/run_aggregator.py
index d6c56184..47eaba47 100644
--- a/openstack_health/run_aggregator.py
+++ b/openstack_health/run_aggregator.py
@@ -30,6 +30,8 @@ def format_output_numeric_dicts(df):
 
 
 def get_numeric_data(run_times_time_series, sample_rate):
+    if not run_times_time_series:
+        return {}
     temp_dict = {}
     sample_rate = base.resample_matrix[sample_rate]
     for run_at, run in run_times_time_series.items():
diff --git a/openstack_health/tests/test_run_aggregator.py b/openstack_health/tests/test_run_aggregator.py
index 71d070a2..27eb616b 100644
--- a/openstack_health/tests/test_run_aggregator.py
+++ b/openstack_health/tests/test_run_aggregator.py
@@ -58,6 +58,11 @@ class TestRunAggregatorGetNumericData(base.TestCase):
             }
         }
 
+    def test_get_numeric_data_no_runs(self):
+        expected = {}
+        actual = run_aggregator.get_numeric_data({}, 'day')
+        self.assertEqual(expected, actual)
+
     def test_get_numeric_data(self):
         self.maxDiff = None
         expected = {