diff --git a/src/ui/fonts.ts b/src/ui/fonts.ts
index c8bb7463..520c6ff2 100644
--- a/src/ui/fonts.ts
+++ b/src/ui/fonts.ts
@@ -2,13 +2,11 @@ import codePro400 from './fonts/source-code-pro-latin-400-normal.woff2?url';
 import sans400 from './fonts/source-sans-3-latin-400-normal.woff2?url';
 import sans500 from './fonts/source-sans-3-latin-500-normal.woff2?url';
 import sans600 from './fonts/source-sans-3-latin-600-normal.woff2?url';
-import sans700 from './fonts/source-sans-3-latin-700-normal.woff2?url';
 
 export const FACES: readonly [family: string, url: string, weight: string][] = [
   ['Source Sans 3', sans400, '400'],
   ['Source Sans 3', sans500, '500'],
   ['Source Sans 3', sans600, '600'],
-  ['Source Sans 3', sans700, '700'],
   ['Source Code Pro', codePro400, '400'],
 ];
 
diff --git a/src/ui/fonts/source-sans-3-latin-700-normal.woff2 b/src/ui/fonts/source-sans-3-latin-700-normal.woff2
deleted file mode 100644
index 3cb944ca..00000000
Binary files a/src/ui/fonts/source-sans-3-latin-700-normal.woff2 and /dev/null differ
diff --git a/tests/ui/fonts.test.ts b/tests/ui/fonts.test.ts
index d05eede3..f863afb7 100644
--- a/tests/ui/fonts.test.ts
+++ b/tests/ui/fonts.test.ts
@@ -97,27 +97,45 @@ function codePoints(file: string): Set<number> {
   return found;
 }
 
+/** The weights `src/` sets as `fontWeight`, plus the 400 a style without one draws in. */
+function usedWeights(): Set<string> {
+  const used = new Set(['400']);
+  for (const file of sources('src'))
+    for (const [, setting] of readFileSync(file, 'utf8').matchAll(/fontWeight:([^,\n}]*)/g))
+      for (const [, weight] of setting!.matchAll(/'(\d{3}|bold|normal)'/g))
+        used.add(weight === 'bold' ? '700' : weight === 'normal' ? '400' : weight!);
+  return used;
+}
+
 describe('editor fonts', () => {
+  const loaded = new Set(
+    FACES.filter(([family]) => family === 'Source Sans 3').map(([, , weight]) => weight),
+  );
+
   it('loads a face for every weight the editor sets (#214)', () => {
-    const loaded = new Set(
-      FACES.filter(([family]) => family === 'Source Sans 3').map(([, , weight]) => weight),
-    );
-    const used = new Set(['400']);
-    for (const file of sources('src'))
-      for (const [, setting] of readFileSync(file, 'utf8').matchAll(/fontWeight:([^,\n}]*)/g))
-        for (const [, weight] of setting!.matchAll(/'(\d{3}|bold|normal)'/g))
-          used.add(weight === 'bold' ? '700' : weight === 'normal' ? '400' : weight!);
+    const used = usedWeights();
     expect(used.has('500')).toBe(true);
     for (const weight of used) expect(loaded, `weight ${weight}`).toContain(weight);
   });
 
-  it('ships a file for every face it loads', () => {
-    const files = readdirSync(FONT_DIR);
+  // Every face is waited for before the editor starts (#273).
+  it('loads no face the editor never sets', () => {
+    const used = usedWeights();
+    for (const weight of loaded) expect(used, `weight ${weight}`).toContain(weight);
+  });
+
+  it('ships a file for every face it loads, and no other', () => {
+    const files = readdirSync(FONT_DIR).filter((f) => f.endsWith('.woff2'));
     for (const [, url, weight] of FACES)
       expect(
         files.some((f) => url.endsWith(f)),
         `${url} (${weight})`,
       ).toBe(true);
+    for (const file of files)
+      expect(
+        FACES.some(([, url]) => url.endsWith(file)),
+        file,
+      ).toBe(true);
   });
 
   it('reads the Latin subset from the files themselves', () => {