diff --git a/adev/shared-docs/styles/global-styles.scss b/adev/shared-docs/styles/global-styles.scss
index f879373053a..6cd2a471797 100644
--- a/adev/shared-docs/styles/global-styles.scss
+++ b/adev/shared-docs/styles/global-styles.scss
@@ -62,7 +62,6 @@ $theme: mat.m2-define-light-theme(
 );
 
 // Include material core styles.
-@include mat.core();
 @include cdk.a11y-visually-hidden();
 @include mat.tabs-theme($theme);
 @include mat.button-toggle-theme($theme);