diff --git a/stapled/core/stapleadder.py b/stapled/core/stapleadder.py
index 3c8580a..adba588 100644
--- a/stapled/core/stapleadder.py
+++ b/stapled/core/stapleadder.py
@@ -11,7 +11,6 @@
 from io import StringIO
 from stapled.core.excepthandler import stapled_except_handle
 import stapled.core.exceptions
-import stapled.util.functions
 
 try:
     _ = BrokenPipeError
@@ -137,9 +136,7 @@ def add_staple(self, model):
         :param model: An object that has a binary string `ocsp_staple` in it
             and a filename `filename`.
         """
-        command = self.OCSP_ADD.format(
-            stapled.util.functions.base64(model.ocsp_staple.raw)
-        )
+        command = self.OCSP_ADD.format(model.ocsp_staple.base64)
         LOG.debug("Setting OCSP staple with command '%s'", command)
         directory = os.path.dirname(model.filename)
         response = self.send(directory, command)
diff --git a/stapled/util/ocsp.py b/stapled/util/ocsp.py
index 7cde16e..b0bc81b 100644
--- a/stapled/util/ocsp.py
+++ b/stapled/util/ocsp.py
@@ -5,6 +5,7 @@
 from builtins import str
 import datetime
 import asn1crypto
+from stapled.util.functions import base64
 
 
 class OCSPResponseParser(object):
@@ -22,6 +23,10 @@ def __init__(self, ocsp_object=None):
         # SingleResponse object should be in these keys
         self.tbsresponse = self.response['responses'][0]
 
+    @property
+    def base64(self):
+        return base64(self.raw.dump())
+
     @property
     def status(self):
         """