diff --git a/ui-ngx/src/styles.scss b/ui-ngx/src/styles.scss
index 7a49333984..969cb431e6 100644
--- a/ui-ngx/src/styles.scss
+++ b/ui-ngx/src/styles.scss
@@ -912,9 +912,6 @@ mat-icon {
     &.tb-mat-28 {
       @include tb-mat-icon-size(28);
     }
-    &.tb-mat-30 {
-      @include tb-mat-icon-size(30);
-    }
     &.tb-mat-32 {
       @include tb-mat-icon-size(32);
     }