diff --git a/edb/server/config/types.py b/edb/server/config/types.py
index 975cbbd8dbbb..2332377d8336 100644
--- a/edb/server/config/types.py
+++ b/edb/server/config/types.py
@@ -285,7 +285,8 @@ def effective(cls, value: str | None) -> QueryCacheMode:
             # Persistent cache disabled for now by default on arm64 linux
             # because of observed problems in CI test runs.
             if platform.system() == 'Linux' and platform.machine() == 'arm64':
-                rv = QueryCacheMode.InMemory
+                # rv = QueryCacheMode.InMemory
+                rv = QueryCacheMode.PgFunc
             else:
                 rv = QueryCacheMode.PgFunc
         return rv