diff --git a/modules/gitit/default.nix b/modules/gitit/default.nix
index ff35e03..0149c08 100644
--- a/modules/gitit/default.nix
+++ b/modules/gitit/default.nix
@@ -22,6 +22,7 @@ let
     disable-registration: ${yesNo disable-registration}
     access-question: ${access-question}
     access-question-answers: ${access-question-answers}
+    max-upload-size: ${toString max-upload-size}K
   '';
 
 in
@@ -49,6 +50,17 @@ in
       default = "Wiki";
       description = "The title of the wiki.";
     };
+    max-upload-size = mkOption {
+      type = lib.types.int;
+      default = 100;
+      description = ''
+        specifies an upper limit on the size (in kilobytes) of files uploaded
+        through the wiki's web interface.
+        To disable uploads, set this to 0.
+        This will result in the uploads link disappearing
+        and the _upload url becoming inactive.
+      '';
+    };
     access-question = mkOption {
       type = lib.types.str;
       default = "";