diff --git a/detect_secrets/plugins/high_entropy_strings.py b/detect_secrets/plugins/high_entropy_strings.py
index 5a352cb1..a2ca65de 100644
--- a/detect_secrets/plugins/high_entropy_strings.py
+++ b/detect_secrets/plugins/high_entropy_strings.py
@@ -26,9 +26,8 @@ def __init__(self, charset: str, limit: float) -> None:
         self.charset = charset
         self.entropy_limit = limit
 
-        # 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):