diff --git a/core/api.txt b/core/api.txt
index d9e586ffd33..8a9af0b2918 100644
--- a/core/api.txt
+++ b/core/api.txt
@@ -1833,7 +1833,7 @@ ion-spinner,css-prop,--color
 ion-split-pane,shadow
 ion-split-pane,prop,contentId,string | undefined,undefined,false,true
 ion-split-pane,prop,disabled,boolean,false,false,false
-ion-split-pane,prop,when,boolean | string,QUERY['lg'],false,false
+ion-split-pane,prop,when,boolean | string,'(min-width: 992px)',false,false
 ion-split-pane,event,ionSplitPaneVisible,{ visible: boolean; },true
 ion-split-pane,css-prop,--border,ios
 ion-split-pane,css-prop,--border,md
diff --git a/core/src/components.d.ts b/core/src/components.d.ts
index 37223c4f77a..443c04611cf 100644
--- a/core/src/components.d.ts
+++ b/core/src/components.d.ts
@@ -3313,7 +3313,7 @@ export namespace Components {
         "isVisible": () => Promise<boolean>;
         /**
           * When the split-pane should be shown. Can be a CSS media query expression, or a shortcut expression. Can also be a boolean expression.
-          * @default QUERY['lg']
+          * @default '(min-width: 992px)'
          */
         "when": string | boolean;
     }
@@ -8683,7 +8683,7 @@ declare namespace LocalJSX {
         "onIonSplitPaneVisible"?: (event: IonSplitPaneCustomEvent<{ visible: boolean }>) => void;
         /**
           * When the split-pane should be shown. Can be a CSS media query expression, or a shortcut expression. Can also be a boolean expression.
-          * @default QUERY['lg']
+          * @default '(min-width: 992px)'
          */
         "when"?: string | boolean;
     }
diff --git a/core/src/components/split-pane/split-pane.tsx b/core/src/components/split-pane/split-pane.tsx
index e2a02dab7a9..1058b754c6a 100644
--- a/core/src/components/split-pane/split-pane.tsx
+++ b/core/src/components/split-pane/split-pane.tsx
@@ -50,7 +50,7 @@ export class SplitPane implements ComponentInterface {
    * Can be a CSS media query expression, or a shortcut expression.
    * Can also be a boolean expression.
    */
-  @Prop() when: string | boolean = QUERY['lg'];
+  @Prop() when: string | boolean = '(min-width: 992px)';
 
   /**
    * Expression to be called when the split-pane visibility has changed