diff --git a/scrapy/core/http2/stream.py b/scrapy/core/http2/stream.py
index f45ddc04e..1c856ff68 100644
--- a/scrapy/core/http2/stream.py
+++ b/scrapy/core/http2/stream.py
@@ -243,7 +243,6 @@ class Stream:
         bytes_to_send_size = min(window_size, self.remaining_content_length)
 
         # We now need to send a number of data frames.
-        data_frames_sent = 0
         while bytes_to_send_size > 0:
             chunk_size = min(bytes_to_send_size, max_frame_size)
 
@@ -252,7 +251,6 @@ class Stream:
 
             self._conn.send_data(self.stream_id, data_chunk, end_stream=False)
 
-            data_frames_sent += 1
             bytes_to_send_size = bytes_to_send_size - chunk_size
             self.remaining_content_length = self.remaining_content_length - chunk_size
 
diff --git a/tests/test_http2_client_protocol.py b/tests/test_http2_client_protocol.py
index ca8a629b1..98dc98a0f 100644
--- a/tests/test_http2_client_protocol.py
+++ b/tests/test_http2_client_protocol.py
@@ -42,8 +42,8 @@ def make_html_body(val):
 
 
 class Data:
-    SMALL_SIZE = 1024 * 10  # 10 KB
-    LARGE_SIZE = (1024 ** 2) * 10  # 10 MB
+    SMALL_SIZE = 1024  # 1 KB
+    LARGE_SIZE = 1024 ** 2  # 1 MB
 
     STR_SMALL = generate_random_string(SMALL_SIZE)
     STR_LARGE = generate_random_string(LARGE_SIZE)