diff --git a/app/components/post_draft/post_input/post_input.tsx b/app/components/post_draft/post_input/post_input.tsx
index a82022d654..756a05e773 100644
--- a/app/components/post_draft/post_input/post_input.tsx
+++ b/app/components/post_draft/post_input/post_input.tsx
@@ -335,6 +335,7 @@ export default function PostInput({
             underlineColorAndroid='transparent'
             textContentType='none'
             value={value}
+            autoCapitalize='sentences'
         />
     );
 }