diff --git a/parsedmarc/__init__.py b/parsedmarc/__init__.py
index cf8197c9..60c4be74 100644
--- a/parsedmarc/__init__.py
+++ b/parsedmarc/__init__.py
@@ -892,7 +892,11 @@ def extract_report(content: Union[bytes, str, BinaryIO]) -> str:
     try:
         if isinstance(content, str):
             try:
-                file_object = BytesIO(b64decode(content, validate=True))
+                file_object = BytesIO(
+                    b64decode(
+                        content.replace("\n", "").replace("\r", ""), validate=True
+                    )
+                )
             except binascii.Error:
                 return content
             header = file_object.read(6)