diff --git a/pinecone/openapi_support/rest_utils.py b/pinecone/openapi_support/rest_utils.py
index d41e192a..28ef1d48 100644
--- a/pinecone/openapi_support/rest_utils.py
+++ b/pinecone/openapi_support/rest_utils.py
@@ -27,7 +27,10 @@ def getheaders(self):
 
     def getheader(self, name, default=None):
         """Returns a given response header."""
-        return self.headers.get(name, default)
+        try:
+            return self.headers[name]
+        except KeyError:
+            return default
 
 
 def raise_exceptions_or_return(r: RESTResponse):