diff --git a/src/OnboardingSPA/components/LivePreview/BlockPreview/auto.js b/src/OnboardingSPA/components/LivePreview/BlockPreview/auto.js
index 24e6f15bf..f522e43dc 100644
--- a/src/OnboardingSPA/components/LivePreview/BlockPreview/auto.js
+++ b/src/OnboardingSPA/components/LivePreview/BlockPreview/auto.js
@@ -83,6 +83,7 @@ function AutoBlockPreview( {
 						bodyElement.style.boxSizing = 'border-box';
 						bodyElement.style.position = 'absolute';
 						bodyElement.style.width = '100%';
+						bodyElement.spellcheck = 0;
 					}, [] ) }
 					aria-hidden
 					tabIndex={ -1 }