diff --git a/lib.d/do-configure.pl b/lib.d/do-configure.pl
index 4c895db..919cfb6 100755
--- a/lib.d/do-configure.pl
+++ b/lib.d/do-configure.pl
@@ -461,6 +461,7 @@ my @set_blank = qw(
     cookie_lock
     debug_trap
     extra_processing_csv
+    extra_subs_filter_types
     foreignmap_csv
     hardcoded_endpoint_csv
     host_blacklist
diff --git a/lib.d/lint.pl b/lib.d/lint.pl
index beaaa0e..ce6c875 100755
--- a/lib.d/lint.pl
+++ b/lib.d/lint.pl
@@ -36,6 +36,7 @@ my %known =
      'DNS_DOMAIN_RERE2' => 1, # ...with dots double-escaped
      'EOTK_HOME' => 1,
      'EXTRA_PROCESSING_CSV' => 1,
+     'EXTRA_SUBS_FILTER_TYPES' => 1,
      'FORCE_HTTPS' => 1,
      'FOREIGNMAP_CSV' => 1,
      'HARDCODED_ENDPOINT_CSV' => 1,
diff --git a/templates.d/nginx.conf.txt b/templates.d/nginx.conf.txt
index 76edce2..59727e0 100755
--- a/templates.d/nginx.conf.txt
+++ b/templates.d/nginx.conf.txt
@@ -115,6 +115,12 @@ http {
   text/css
   text/javascript
   text/xml
+  %%IF %EXTRA_SUBS_FILTER_TYPES%
+  # extra_subs_filter_types
+  %EXTRA_SUBS_FILTER_TYPES%
+  %%ELSE
+  # no extra_subs_filter_types
+  %%ENDIF
   ;
 
   #==================================================================