diff --git a/app/helpers/processings_helper.rb b/app/helpers/processings_helper.rb
index 8e189a9..bd6d48b 100644
--- a/app/helpers/processings_helper.rb
+++ b/app/helpers/processings_helper.rb
@@ -13,7 +13,8 @@ module ProcessingsHelper
     range_snapshots.each do |range_snapshot|
       range = Range.new(
         range_snapshot.beginning == '-INF' ? -Float::INFINITY : range_snapshot.beginning.to_f,
-        range_snapshot.end == 'INF' ? Float::INFINITY : range_snapshot.end.to_f
+        range_snapshot.end == 'INF' ? Float::INFINITY : range_snapshot.end.to_f,
+        exclude_end: true
       )
       return range_snapshot if range === metric_result.value
     end
diff --git a/spec/helpers/processings_helper_spec.rb b/spec/helpers/processings_helper_spec.rb
index 2ed3c6a..aee23e5 100644
--- a/spec/helpers/processings_helper_spec.rb
+++ b/spec/helpers/processings_helper_spec.rb
@@ -49,6 +49,15 @@ describe ProcessingsHelper, :type => :helper do
         expect(helper.find_range_snapshot(metric_result)).to eq(range_snapshots[0])
       end
     end
+
+    context 'with incomplete ranges' do
+      let!(:range_snapshots) { [make_range('-INF', 6.0), make_range(6.1, 'INF')] }
+
+      it 'should return nil' do
+        expect(helper.find_range_snapshot(metric_result)).to be_nil
+      end
+    end
+
   end
 
   describe 'format_module_name' do
--
libgit2 0.21.2