diff --git a/tests/dataset_tests/README.md b/tests/dataset_tests/README.md
index 4ba5dc3c6..0a0905ed4 100644
--- a/tests/dataset_tests/README.md
+++ b/tests/dataset_tests/README.md
@@ -1,2 +1,2 @@
 # About dataset tests
-This tests is for testing the prepared dataset from Yahoo
+Tests in this folder are for testing the prepared dataset from Yahoo
diff --git a/tests/dataset_tests/test_dataset.py b/tests/dataset_tests/test_dataset.py
index b22eb81ed..5393b84df 100644
--- a/tests/dataset_tests/test_dataset.py
+++ b/tests/dataset_tests/test_dataset.py
@@ -34,7 +34,7 @@ class TestDataset(unittest.TestCase):
         print(close_desc)
         self.assertLessEqual(abs(close_desc.loc["80%"][0]), 0.1, "Close value is abnormal")
         self.assertLessEqual(abs(close_desc.loc["max"][0]), 0.2, "Close value is abnormal")
-        self.assertGreaterEqual(abs(close_desc.loc["min"][0]), -0.2, "Close value is abnormal")
+        self.assertGreaterEqual(close_desc.loc["min"][0], -0.2, "Close value is abnormal")
 
 
 if __name__ == '__main__':