diff --git a/plugs/editor/upload.ts b/plugs/editor/upload.ts
index f373f0e1..4269672e 100644
--- a/plugs/editor/upload.ts
+++ b/plugs/editor/upload.ts
@@ -1,8 +1,8 @@
 import { readSetting } from "$sb/lib/settings_page.ts";
 import { editor, space } from "$sb/syscalls.ts";
 import { UploadFile } from "../../plug-api/types.ts";
+import { maximumAttachmentSize } from "../../web/constants.ts";
 
-const maximumAttachmentSize = 10; // MiB
 
 function folderName(path: string) {
   return path.split("/").slice(0, -1).join("/");
diff --git a/web/cm_plugins/editor_paste.ts b/web/cm_plugins/editor_paste.ts
index 6b9b68da..e792584d 100644
--- a/web/cm_plugins/editor_paste.ts
+++ b/web/cm_plugins/editor_paste.ts
@@ -195,11 +195,10 @@ export function attachmentExtension(editor: Client) {
     suggestedName: string,
     mimeType: string,
   ) {
-    if (data!.byteLength > maximumAttachmentSize) {
+    const maxSize = editor.settings.maximumAttachmentSize || maximumAttachmentSize;
+    if (data!.byteLength > (maxSize * 1024 * 1024)) {
       editor.flashNotification(
-        `Attachment is too large, maximum is ${
-          maximumAttachmentSize / 1024 / 1024
-        }MB`,
+        `Attachment is too large, maximum is ${maxSize}MiB`,
         "error",
       );
       return;
diff --git a/web/constants.ts b/web/constants.ts
index 26d93777..f152a7c5 100644
--- a/web/constants.ts
+++ b/web/constants.ts
@@ -1 +1 @@
-export const maximumAttachmentSize = 1024 * 1024 * 10; // 10MB
+export const maximumAttachmentSize = 10; // MiB
\ No newline at end of file