diff --git a/README.md b/README.md
index 727b83fd84..7358106169 100644
--- a/README.md
+++ b/README.md
@@ -1789,9 +1789,6 @@ The following extractors use this feature:
 * `pot_debug`: Enable debug logging for PO Token fetching. Either `true` or `false` (default `false`)
 * `fetch_pot`: Policy to use for fetching a PO Token from providers. `always` to always try fetch a PO Token regardless if the client requires one for the given context. `when_required` to only fetch a PO Token if the client requires one for the given context (default)
 
-###### youtubepot-memory
-* `max_size`: Max size of the PO Token LRU memory cache (default 25)
-
 ###### youtubepot-webpo
 * `bind_to_visitor_id`: Whether to use the Visitor ID instead of Visitor Data for caching WebPO tokens. Either `true` or `false` (default `true`)
 
diff --git a/test/test_pot/test_pot_builtin_memorycache.py b/test/test_pot/test_pot_builtin_memorycache.py
index 79b2e15d4e..a42d7eeadc 100644
--- a/test/test_pot/test_pot_builtin_memorycache.py
+++ b/test/test_pot/test_pot_builtin_memorycache.py
@@ -4,7 +4,7 @@ from collections import OrderedDict
 import pytest
 from yt_dlp.extractor.youtube.pot._provider import IEContentProvider, BuiltInIEContentProvider
 from yt_dlp.utils import bug_reports_message
-from yt_dlp.extractor.youtube.pot.builtin.cache.memory import MemoryLRUPCP, memorylru_preference
+from yt_dlp.extractor.youtube.pot.builtin.cache.memory import MemoryLRUPCP, memorylru_preference, initialize_global_cache
 from yt_dlp.version import __version__
 from yt_dlp.globals import _pot_memory_cache, _pot_cache_providers
 
@@ -94,20 +94,6 @@ class TestMemoryLRUPCS:
         assert len(pcp.cache) == 0
         assert pcp.get('key1') is None
 
-    def test_max_size_setting(self, ie, logger):
-        MAX_SIZE = 5
-        called_max_size = 0
-
-        def initialize_cache(max_size):
-            nonlocal called_max_size
-            called_max_size = max_size
-            return OrderedDict(), threading.Lock(), max_size
-
-        pcp = MemoryLRUPCP(ie, logger, {'max_size': [str(MAX_SIZE)]}, initialize_cache=initialize_cache)
-
-        assert called_max_size == MAX_SIZE
-        assert pcp.max_size == MAX_SIZE
-
     def test_use_global_cache_default(self, ie, logger):
         pcp = MemoryLRUPCP(ie, logger, {})
         assert pcp.max_size == _pot_memory_cache.value['max_size'] == 25
@@ -123,7 +109,7 @@ class TestMemoryLRUPCS:
         pcp = MemoryLRUPCP(ie, logger, {})
         assert pcp.max_size == _pot_memory_cache.value['max_size'] == 25
         with pytest.raises(ValueError, match='Cannot change max_size of initialized global memory cache'):
-            MemoryLRUPCP(ie, logger, {'max_size': ['50']})
+            initialize_global_cache(50)
 
         assert pcp.max_size == _pot_memory_cache.value['max_size'] == 25
 
diff --git a/yt_dlp/extractor/youtube/pot/builtin/cache/memory.py b/yt_dlp/extractor/youtube/pot/builtin/cache/memory.py
index 2a7b7991e9..f89d49b4eb 100644
--- a/yt_dlp/extractor/youtube/pot/builtin/cache/memory.py
+++ b/yt_dlp/extractor/youtube/pot/builtin/cache/memory.py
@@ -12,7 +12,6 @@ from yt_dlp.extractor.youtube.pot.cache import (
     register_pcp_preference,
 )
 from yt_dlp.globals import _pot_memory_cache
-from yt_dlp.utils import int_or_none
 
 
 def initialize_global_cache(max_size: int):
@@ -39,8 +38,7 @@ class MemoryLRUPCP(PoTokenCacheProvider, BuiltInIEContentProvider):
         **kwargs,
     ):
         super().__init__(*args, **kwargs)
-        self.cache, self.lock, self.max_size = initialize_cache(
-            int_or_none(self.settings.get('max_size', [''])[0]) or self.DEFAULT_CACHE_SIZE)
+        self.cache, self.lock, self.max_size = initialize_cache(self.DEFAULT_CACHE_SIZE)
 
     def is_available(self) -> bool:
         return True