diff --git a/openapi_core/contrib/falcon/responses.py b/openapi_core/contrib/falcon/responses.py
index 284c64ba..108763be 100644
--- a/openapi_core/contrib/falcon/responses.py
+++ b/openapi_core/contrib/falcon/responses.py
@@ -1,4 +1,6 @@
 """OpenAPI core contrib falcon responses module"""
+from itertools import tee
+
 from falcon.response import Response
 from werkzeug.datastructures import Headers
 
@@ -12,7 +14,12 @@ def __init__(self, response: Response):
     @property
     def data(self) -> str:
         if self.response.text is None:
-            return ""
+            if self.response.stream is None:
+                return ""
+            resp_iter1, resp_iter2 = tee(self.response.stream)
+            self.response.stream = resp_iter1
+            content = b"".join(resp_iter2)
+            return content
         assert isinstance(self.response.text, str)
         return self.response.text