diff --git a/src/material/core/theming/tests/m3-theme.spec.ts b/src/material/core/theming/tests/m3-theme.spec.ts
index 52c867f80525..e05486afb200 100644
--- a/src/material/core/theming/tests/m3-theme.spec.ts
+++ b/src/material/core/theming/tests/m3-theme.spec.ts
@@ -1,4 +1,4 @@
-import {parse, Rule} from 'postcss';
+import {parse} from 'postcss';
 import {compileString} from 'sass';
 import {runfiles} from '@bazel/runfiles';
 import * as path from 'path';