diff --git a/packages/slate-react/src/components/editable.tsx b/packages/slate-react/src/components/editable.tsx
index 0dc85955e..af95b9e6d 100644
--- a/packages/slate-react/src/components/editable.tsx
+++ b/packages/slate-react/src/components/editable.tsx
@@ -505,14 +505,10 @@ export const Editable = (props: EditableProps) => {
         {...attributes}
         // COMPAT: Certain browsers don't support the `beforeinput` event, so we'd
         // have to use hacks to make these replacement-based features work.
-        spellCheck={
-          !HAS_BEFORE_INPUT_SUPPORT ? undefined : attributes.spellCheck
-        }
-        autoCorrect={
-          !HAS_BEFORE_INPUT_SUPPORT ? undefined : attributes.autoCorrect
-        }
+        spellCheck={!HAS_BEFORE_INPUT_SUPPORT ? false : attributes.spellCheck}
+        autoCorrect={!HAS_BEFORE_INPUT_SUPPORT ? false : attributes.autoCorrect}
         autoCapitalize={
-          !HAS_BEFORE_INPUT_SUPPORT ? undefined : attributes.autoCapitalize
+          !HAS_BEFORE_INPUT_SUPPORT ? false : attributes.autoCapitalize
         }
         data-slate-editor
         data-slate-node="value"