diff --git a/lib/core/src/lib/styles/_mat-selectors.scss b/lib/core/src/lib/styles/_mat-selectors.scss
index 1256ce00ce..939e43c73b 100644
--- a/lib/core/src/lib/styles/_mat-selectors.scss
+++ b/lib/core/src/lib/styles/_mat-selectors.scss
@@ -142,3 +142,4 @@ $mat-form-field-error-wrapper: '.mat-mdc-form-field-error-wrapper';
 $mat-text-field-textarea: '.mdc-text-field--textarea';
 $mat-list-item-disabled: '.mdc-list-item--disabled';
 $mat-chip-focus-overlay: '.mat-mdc-chip-focus-overlay';
+$mat-mdc-form-field-hint-wrapper: '.mat-mdc-form-field-hint-wrapper';