diff --git a/lib/mocha_adapter.rb b/lib/mocha_adapter.rb
index ab822c28..a5b8469d 100644
--- a/lib/mocha_adapter.rb
+++ b/lib/mocha_adapter.rb
@@ -7,8 +7,8 @@ class MochaAdapter < TestingFrameworkAdapter
   end
 
   def parse_output(output)
-    matches_success = SUCCESS_REGEXP.match(output[:stderr])
-    matches_failed = FAILURES_REGEXP.match(output[:stderr])
+    matches_success = SUCCESS_REGEXP.match(output[:stdout])
+    matches_failed = FAILURES_REGEXP.match(output[:stdout])
     failed = matches_failed ? matches_failed.captures.first.to_i : 0
     success = matches_success ? matches_success.captures.first.to_i : 0
     {count: success+failed, failed: failed}
diff --git a/spec/lib/mocha_adapter_spec.rb b/spec/lib/mocha_adapter_spec.rb
index ab2f74f4..ed3b1685 100644
--- a/spec/lib/mocha_adapter_spec.rb
+++ b/spec/lib/mocha_adapter_spec.rb
@@ -4,11 +4,11 @@ describe MochaAdapter do
   let(:adapter) { described_class.new }
   let(:count) { 42 }
   let(:failed) { 25 }
-  let(:stderr) { "#{count-failed} passing (20ms)\n\n#{failed} failing" }
+  let(:stdout) { "#{count-failed} passing (20ms)\n\n#{failed} failing" }
 
   describe '#parse_output' do
     it 'returns the correct numbers' do
-      expect(adapter.parse_output(stderr: stderr)).to eq(count: count, failed: failed)
+      expect(adapter.parse_output(stdout: stdout)).to eq(count: count, failed: failed)
     end
   end
 end