diff --git a/quartz/build.ts b/quartz/build.ts
index 3a301a0a1..64c462b14 100644
--- a/quartz/build.ts
+++ b/quartz/build.ts
@@ -22,10 +22,6 @@ import { getStaticResourcesFromPlugins } from "./plugins"
 
 type Dependencies = Record<string, DepGraph<FilePath> | null>
 
-type ContentPresence = {
-  hasMermaid: boolean
-}
-
 type BuildData = {
   ctx: BuildCtx
   ignored: GlobbyFilterFunction
@@ -38,7 +34,6 @@ type BuildData = {
   toRemove: Set<FilePath>
   lastBuildMs: number
   dependencies: Dependencies
-  contentPresenceChecks: ContentPresence
 }
 
 type FileEvent = "add" | "change" | "delete"
@@ -134,7 +129,6 @@ async function startServing(
     toRemove: new Set<FilePath>(),
     trackedAssets: new Set<FilePath>(),
     lastBuildMs: 0,
-    contentPresenceChecks: { hasMermaid: false },
   }
 
   const watcher = chokidar.watch(".", {