diff --git a/core/rspamd/start.py b/core/rspamd/start.py
index d6991253..7baa6487 100755
--- a/core/rspamd/start.py
+++ b/core/rspamd/start.py
@@ -16,7 +16,8 @@ env = system.set_env()
 config_files = []
 for rspamd_file in glob.glob("/conf/*"):
     conf.jinja(rspamd_file, env, os.path.join("/etc/rspamd/local.d", os.path.basename(rspamd_file)))
-    config_files.append(os.path.basename(rspamd_file))
+    if rspamd_file != '/conf/forbidden_file_extension.map':
+        config_files.append(os.path.basename(rspamd_file))
 
 for override_file in glob.glob("/overrides/*"):
     if os.path.basename(override_file) not in config_files:
diff --git a/towncrier/newsfragments/2937.bugfix b/towncrier/newsfragments/2937.bugfix
new file mode 100644
index 00000000..7ccd316c
--- /dev/null
+++ b/towncrier/newsfragments/2937.bugfix
@@ -0,0 +1,2 @@
+forbidden_file_extension.map could not be overridden. This file can be overriden to tweak with file extensions are allowed.
+The instructions on https://mailu.io/master/antispam.html#can-i-change-the-list-of-authorized-file-attachments work again.