diff --git a/src/doc8/checks.py b/src/doc8/checks.py
index a43d1a7..8ece687 100644
--- a/src/doc8/checks.py
+++ b/src/doc8/checks.py
@@ -61,11 +61,13 @@ def report_iter(self, line):
 
 
 class CheckCarriageReturn(ContentCheck):
+    _CARRIAGE_RETURN_REGEX = re.compile(rb"\r(?!\n)")
     REPORTS = frozenset(["D004"])
 
     def report_iter(self, parsed_file):
         for i, line in enumerate(parsed_file.lines):
-            if b"\r" in line:
+            matches = self._CARRIAGE_RETURN_REGEX.findall(line)
+            if len(matches) != 0:
                 yield (i + 1, "D004", "Found literal carriage return")