diff --git a/functions/README.md b/functions/README.md
index 6fdf5ca8bf4..42219c564b4 100644
--- a/functions/README.md
+++ b/functions/README.md
@@ -28,7 +28,7 @@ Note: compatibility dates between local development, production and preview envi
 
 3. _Refer to each function's "Development" section below for further instructions._
 
-## Testing on Fondation staging sites vs Cloudfare previews
+## Testing on Foundation staging sites vs Cloudflare previews
 
 We have two cloudflare projects set up that you can deploy previews to. `owid` which is also where our production deployment runs, and `owid-staging`. Currently, `owid` is configured to require authentication while `owid-staging` is accessible from the internet without any kind of auth.
 
diff --git a/functions/_common/grapherRenderer.ts b/functions/_common/grapherRenderer.ts
index b18a5551b30..f189d2b6329 100644
--- a/functions/_common/grapherRenderer.ts
+++ b/functions/_common/grapherRenderer.ts
@@ -162,14 +162,10 @@ async function fetchAndRenderGrapherToSvg(
     slug: string,
     options: ImageOptions,
     searchParams: URLSearchParams,
-    env: Env,
-    etag?: string
+    env: Env
 ) {
     const grapherLogger = new TimeLogger("grapher")
 
-    const url = new URL(`/grapher/${slug}`, env.url)
-    const slugOnly = url.pathname.split("/").pop()
-
     // The top level directory is either the bucket path (should be set in dev environments and production)
     // or the branch name on preview staging environments
     console.log("branch", env.CF_PAGES_BRANCH)
@@ -180,7 +176,7 @@ async function fetchAndRenderGrapherToSvg(
     const key = excludeUndefined([
         ...topLevelDirectory,
         R2GrapherConfigDirectory.publishedGrapherBySlug,
-        `${slugOnly}.json`,
+        `${slug}.json`,
     ]).join("/")
 
     console.log("fetching grapher config from this key", key)
@@ -195,9 +191,9 @@ async function fetchAndRenderGrapherToSvg(
     ) {
         const topLevelDirectory = env.GRAPHER_CONFIG_R2_BUCKET_FALLBACK_PATH
         const fallbackKey = excludeUndefined([
-            ...topLevelDirectory,
+            topLevelDirectory,
             R2GrapherConfigDirectory.publishedGrapherBySlug,
-            `${slugOnly}.json`,
+            `${slug}.json`,
         ]).join("/")
         fallbackUrl = new URL(
             fallbackKey,
@@ -206,7 +202,7 @@ async function fetchAndRenderGrapherToSvg(
     }
 
     // Fetch grapher config
-    const fetchResponse = await fetchFromR2(requestUrl, etag, fallbackUrl)
+    const fetchResponse = await fetchFromR2(requestUrl, undefined, fallbackUrl)
 
     if (fetchResponse.status !== 200) {
         console.log("Failed to fetch grapher config", fetchResponse.status)
@@ -253,8 +249,7 @@ export const fetchAndRenderGrapher = async (
     slug: string,
     searchParams: URLSearchParams,
     outType: "png" | "svg",
-    env: Env,
-    etag?: string
+    env: Env
 ) => {
     const options = extractOptions(searchParams)
 
@@ -263,8 +258,7 @@ export const fetchAndRenderGrapher = async (
         slug,
         options,
         searchParams,
-        env,
-        etag
+        env
     )
     console.log("fetched svg")