diff --git a/src/meta/minifier.js b/src/meta/minifier.js
index 0ab268dc4f..324b827797 100644
--- a/src/meta/minifier.js
+++ b/src/meta/minifier.js
@@ -166,7 +166,7 @@ actions.buildCSS = async function buildCSS(data) {
 		};
 		if (data.minify) {
 			opts.silenceDeprecations = [
-				'legacy-js-api', 'mixed-decls', 'color-functions',
+				'legacy-js-api', 'color-functions',
 				'global-builtin', 'import',
 			];
 		}