diff --git a/moto/core/models.py b/moto/core/models.py
index 360a819c2..aebbfd0db 100644
--- a/moto/core/models.py
+++ b/moto/core/models.py
@@ -442,7 +442,6 @@ class BotocoreEventMockAWS(BaseMockAWS):
                             method=method,
                             url=re.compile(key),
                             callback=convert_flask_to_responses_response(value),
-                            stream=True,
                             match_querystring=False,
                         )
                     )
@@ -451,7 +450,6 @@ class BotocoreEventMockAWS(BaseMockAWS):
                     method=method,
                     url=re.compile(r"https?://.+\.amazonaws.com/.*"),
                     callback=not_implemented_callback,
-                    stream=True,
                     match_querystring=False,
                 )
             )
@@ -460,7 +458,6 @@ class BotocoreEventMockAWS(BaseMockAWS):
                     method=method,
                     url=re.compile(r"https?://.+\.amazonaws.com/.*"),
                     callback=not_implemented_callback,
-                    stream=True,
                     match_querystring=False,
                 )
             )