diff --git a/src/material-experimental/mdc-list/list-option.ts b/src/material-experimental/mdc-list/list-option.ts
index 89b9de13b32c..42a15921f07e 100644
--- a/src/material-experimental/mdc-list/list-option.ts
+++ b/src/material-experimental/mdc-list/list-option.ts
@@ -179,7 +179,7 @@ export class MatListOption extends MatListItemBase implements ListOption, OnInit
   ngOnInit() {
     const list = this._selectionList;
 
-    if (list._value && list._value.some(value => list.compareWith(value, this._value))) {
+    if (list._value && list._value.some(value => list.compareWith(this._value, value))) {
       this._setSelected(true);
     }
 
diff --git a/src/material/list/selection-list.ts b/src/material/list/selection-list.ts
index ccf02ab1fb1a..e7f5206d8886 100644
--- a/src/material/list/selection-list.ts
+++ b/src/material/list/selection-list.ts
@@ -205,7 +205,7 @@ export class MatListOption
   ngOnInit() {
     const list = this.selectionList;
 
-    if (list._value && list._value.some(value => list.compareWith(value, this._value))) {
+    if (list._value && list._value.some(value => list.compareWith(this._value, value))) {
       this._setSelected(true);
     }