diff --git a/lib/Ebook.php b/lib/Ebook.php
index ec051185..9cc757af 100644
--- a/lib/Ebook.php
+++ b/lib/Ebook.php
@@ -2333,7 +2333,7 @@ final class Ebook{
 
 		if($query !== null && $query != ''){
 			// Preserve quotes in the query so the user can enter, e.g., "war and peace" for an exact match.
-			$query = trim(preg_replace('|[^a-zA-Z0-9" ]|ius', ' ', Formatter::RemoveDiacritics($query)));
+			$query = trim(preg_replace('|[^a-zA-Z0-9" ]|ius', '', Formatter::RemoveDiacritics($query)));
 
 			$whereCondition .= ' and match(e.IndexableText, e.Title, e.IndexableAuthors, e.IndexableCollections) against(?) ';
 			$params[] = $query;