diff --git a/browser/base/content/contentSearchUI.js b/browser/base/content/contentSearchUI.js
index e14f23b1e24e..b6fa0a8e1794 100644
--- a/browser/base/content/contentSearchUI.js
+++ b/browser/base/content/contentSearchUI.js
@@ -623,17 +623,12 @@ ContentSearchUIController.prototype = {
       return;
     }
     let searchWithHeader = document.getElementById("contentSearchSearchWithHeader");
-    while (searchWithHeader.firstChild) {
-      searchWithHeader.firstChild.remove();
-    }
     if (this.input.value) {
-      let html = "<span class='contentSearchSearchWithHeaderSearchText'>" +
-                 this.input.value + "</span>";
-      html = this._strings.searchForKeywordsWith.replace("%S", html);
-      searchWithHeader.innerHTML = html;
-      return;
+      searchWithHeader.innerHTML = this._strings.searchForSomethingWith;
+      searchWithHeader.querySelector('.contentSearchSearchWithHeaderSearchText').textContent = this.input.value;
+    } else {
+      searchWithHeader.textContent = this._strings.searchWithHeader;
     }
-    searchWithHeader.appendChild(document.createTextNode(this._strings.searchWithHeader));
   },
 
   _speculativeConnect: function () {
diff --git a/browser/locales/en-US/chrome/browser/search.properties b/browser/locales/en-US/chrome/browser/search.properties
index 8649d5c936b4..d7cd339cc94d 100644
--- a/browser/locales/en-US/chrome/browser/search.properties
+++ b/browser/locales/en-US/chrome/browser/search.properties
@@ -33,14 +33,15 @@ cmd_addFoundEngine=Add "%S"
 # grouped in a submenu using cmd_addFoundEngineMenu as a label.
 cmd_addFoundEngineMenu=Add search engine
 
-# LOCALIZATION NOTE (searchForKeywordsWith):
+# LOCALIZATION NOTE (searchForSomethingWith):
 # This string is used to build the header above the list of one-click
-# search providers:  "Search for <user-typed keywords> with:"
-searchForKeywordsWith=Search for %S with:
+# search providers:  "Search for <user-typed string> with:"
+# NB: please leave the <span> and its class exactly as it is in English.
+searchForSomethingWith=Search for <span class='contentSearchSearchWithHeaderSearchText'></span> with:
 
 # LOCALIZATION NOTE (searchWithHeader):
 # The wording of this string should be as close as possible to
-# searchForKeywordsWith. This string will be used when the user
+# searchForSomethingWith. This string will be used when the user
 # has not typed anything.
 searchWithHeader=Search with:
 
diff --git a/browser/modules/ContentSearch.jsm b/browser/modules/ContentSearch.jsm
index 5c313d3c54d3..e1f25dd2b803 100644
--- a/browser/modules/ContentSearch.jsm
+++ b/browser/modules/ContentSearch.jsm
@@ -114,7 +114,7 @@ this.ContentSearch = {
     }
     this._searchSuggestionUIStrings = {};
     let searchBundle = Services.strings.createBundle("chrome://browser/locale/search.properties");
-    let stringNames = ["searchHeader", "searchPlaceholder", "searchForKeywordsWith",
+    let stringNames = ["searchHeader", "searchPlaceholder", "searchForSomethingWith",
                        "searchWithHeader", "searchSettings"];
     for (let name of stringNames) {
       this._searchSuggestionUIStrings[name] = searchBundle.GetStringFromName(name);