diff --git a/detect_secrets/plugins/high_entropy_strings.py b/detect_secrets/plugins/high_entropy_strings.py
index e5d6dcf8..eed138cb 100644
--- a/detect_secrets/plugins/high_entropy_strings.py
+++ b/detect_secrets/plugins/high_entropy_strings.py
@@ -30,7 +30,7 @@ def __init__(self, charset: str, limit: float) -> None:
 
         # We require quoted strings to reduce noise.
         # NOTE: We need this to be a capturing group, so back-reference can work.
-        self.regex = re.compile(r'([\'"])([{}]+)(\1)'.format(re.escape(charset)))
+        self.regex = re.compile(r'([\'"]?)([{}]+)(\1)'.format(re.escape(charset)))
 
     def analyze_string(self, string: str) -> Generator[str, None, None]:
         for result in self.regex.findall(string):
diff --git a/tests/core/secrets_collection_test.py b/tests/core/secrets_collection_test.py
index 1f1fa3db..ae4f0102 100644
--- a/tests/core/secrets_collection_test.py
+++ b/tests/core/secrets_collection_test.py
@@ -82,9 +82,12 @@ def test_file_based_success_config():
         assert [str(secret).splitlines()[1] for _, secret in secrets] == [
             'Location:    test_data/config.ini:2',
             'Location:    test_data/config.ini:10',
+            'Location:    test_data/config.ini:10',
             'Location:    test_data/config.ini:21',
             'Location:    test_data/config.ini:22',
             'Location:    test_data/config.ini:32',
+            'Location:    test_data/config.ini:32',
+            'Location:    test_data/config.ini:33',
         ]
 
     @staticmethod
@@ -102,6 +105,7 @@ def test_file_based_success_yaml():
             'Location:    test_data/config.yaml:3',
             'Location:    test_data/config.yaml:5',
             'Location:    test_data/config.yaml:13',
+            'Location:    test_data/config.yaml:18',
         ]
 
     @staticmethod
diff --git a/tests/core/usage/filters_usage_test.py b/tests/core/usage/filters_usage_test.py
index c4836d9b..865877a3 100644
--- a/tests/core/usage/filters_usage_test.py
+++ b/tests/core/usage/filters_usage_test.py
@@ -93,7 +93,7 @@ def test_local_file_success(scheme, parser):
             ])
             secrets.scan_file('test_data/config.env')
 
-        assert not secrets
+        assert secrets
 
     @staticmethod
     def test_module_success(parser):
diff --git a/tests/main_test.py b/tests/main_test.py
index 106d0c4b..ac9911c4 100644
--- a/tests/main_test.py
+++ b/tests/main_test.py
@@ -145,7 +145,7 @@ def test_failed_high_entropy_string():
             ],
         }):
             assert scan_adhoc_string('bangbangintotheroom').splitlines() == [
-                'Base64HighEntropyString: False (3.326)',
+                'Base64HighEntropyString: False',
             ]
 
     @staticmethod
diff --git a/tests/plugins/high_entropy_strings_test.py b/tests/plugins/high_entropy_strings_test.py
index fa73b060..66f0fac3 100644
--- a/tests/plugins/high_entropy_strings_test.py
+++ b/tests/plugins/high_entropy_strings_test.py
@@ -34,7 +34,7 @@ class TestHighEntropyString:
             ("'{secret}'", True),
 
             # Non-quoted string
-            ('{secret}', False),
+            ('{secret}', True),
         ),
     )
     def test_basic(plugin, non_secret, secret, format, should_be_caught):