diff --git a/src/cdk/tsconfig-build.json b/src/cdk/tsconfig-build.json
index f5f0c38618df..cc2145d27c16 100644
--- a/src/cdk/tsconfig-build.json
+++ b/src/cdk/tsconfig-build.json
@@ -13,6 +13,10 @@
     "moduleResolution": "node",
     "outDir": "../../dist/packages/cdk",
     "rootDir": ".",
+    "rootDirs": [
+      ".",
+      "../../dist/packages/material"
+    ],
     "sourceMap": true,
     "inlineSources": true,
     "target": "es2015",