diff --git a/frontend/ng-karaoqueue/src/custom-theme.scss b/frontend/ng-karaoqueue/src/custom-theme.scss
index 9a4699f..b93d68e 100644
--- a/frontend/ng-karaoqueue/src/custom-theme.scss
+++ b/frontend/ng-karaoqueue/src/custom-theme.scss
@@ -3,7 +3,7 @@
 * https://materialtheme.arcsine.dev
 */
 
-@import '~@angular/material/theming';
+@import '@angular/material/theming';
 // Include the common styles for Angular Material. We include this here so that you only
 // have to load a single css file for Angular Material in your app.