diff --git a/nixos/modules/services/web-servers/nginx/default.nix b/nixos/modules/services/web-servers/nginx/default.nix
index f1007c78af28d8..fd230a76499b67 100644
--- a/nixos/modules/services/web-servers/nginx/default.nix
+++ b/nixos/modules/services/web-servers/nginx/default.nix
@@ -46,6 +46,15 @@ let
     }
   ''));
 
+  commonHttpConfig = ''
+      # The mime type definitions included with nginx are very incomplete, so
+      # we use a list of mime types from the mailcap package, which is also
+      # used by most other Linux distributions by default.
+      include ${pkgs.mailcap}/etc/nginx/mime.types;
+      include ${cfg.package}/conf/fastcgi.conf;
+      include ${cfg.package}/conf/uwsgi_params;
+  '';
+
   configFile = pkgs.writers.writeNginxConfig "nginx.conf" ''
     pid /run/nginx/nginx.pid;
     error_log ${cfg.logError};
@@ -61,12 +70,7 @@ let
 
     ${optionalString (cfg.httpConfig == "" && cfg.config == "") ''
     http {
-      # The mime type definitions included with nginx are very incomplete, so
-      # we use a list of mime types from the mailcap package, which is also
-      # used by most other Linux distributions by default.
-      include ${pkgs.mailcap}/etc/nginx/mime.types;
-      include ${cfg.package}/conf/fastcgi.conf;
-      include ${cfg.package}/conf/uwsgi_params;
+      ${commonHttpConfig}
 
       ${optionalString (cfg.resolver.addresses != []) ''
         resolver ${toString cfg.resolver.addresses} ${optionalString (cfg.resolver.valid != "") "valid=${cfg.resolver.valid}"} ${optionalString (!cfg.resolver.ipv6) "ipv6=off"};
@@ -172,9 +176,7 @@ let
 
     ${optionalString (cfg.httpConfig != "") ''
     http {
-      include ${cfg.package}/conf/mime.types;
-      include ${cfg.package}/conf/fastcgi.conf;
-      include ${cfg.package}/conf/uwsgi_params;
+      ${common.httpConfig}
       ${cfg.httpConfig}
     }''}