diff --git a/1p-filters.html b/1p-filters.html
index 72b69284d..034321a8d 100644
--- a/1p-filters.html
+++ b/1p-filters.html
@@ -26,7 +26,7 @@ div > p:last-child {
 <div>
     <p data-i18n="1pFormatHint"></p>
     <p><button id="importUserFiltersFromFile" data-i18n="1pImport"></button> &emsp; <button id="exportUserFiltersToFile" data-i18n="1pExport"></button></p>
-    <textarea class="userFilters" id="userFilters" dir="auto"></textarea>
+    <textarea class="userFilters" id="userFilters" dir="auto" spellcheck="false"></textarea>
     <p><button id="userFiltersApply" disabled="true" data-i18n="1pApplyChanges"></button></p>
 </div>
 
diff --git a/3p-filters.html b/3p-filters.html
index 02433d18d..3d044dc16 100644
--- a/3p-filters.html
+++ b/3p-filters.html
@@ -24,7 +24,7 @@
 
 <div id="externalListsDiv">
 <p data-i18n="3pExternalListsHint" style="margin: 0 0 0.25em 0; font-size: 13px;"></p>
-<textarea id="externalLists" dir="ltr"></textarea>
+<textarea id="externalLists" dir="ltr" spellcheck="false"></textarea>
 <p style="margin: 0.25em 0 0 0"><button id="externalListsApply" disabled="true" data-i18n="3pExternalListsApply"></button></p>
 </div>
 
diff --git a/whitelist.html b/whitelist.html
index 4f85827cd..e1ca1b7fc 100644
--- a/whitelist.html
+++ b/whitelist.html
@@ -29,7 +29,7 @@ div > p:last-child {
 <div>
     <p data-i18n="whitelistPrompt"></p>
     <p><button id="importWhitelistFromFile" data-i18n="whitelistImport"></button> &emsp; <button id="exportWhitelistToFile" data-i18n="whitelistExport"></button></p>
-    <textarea id="whitelist" dir="auto"></textarea>
+    <textarea id="whitelist" dir="auto" spellcheck="false"></textarea>
     <p><button id="whitelistApply" type="button" disabled="true" data-i18n="whitelistApply"></button></p>
 </div>