diff --git a/pdb-ui/src/main/resources/templates/main.html b/pdb-ui/src/main/resources/templates/main.html
index f5e0e9a..9667e89 100644
--- a/pdb-ui/src/main/resources/templates/main.html
+++ b/pdb-ui/src/main/resources/templates/main.html
@@ -16,7 +16,7 @@
 	</div>
 	<div id="search-bar">
 		<div id="search-input-wrapper">
-			<input id="search-input" data-autocomplete="autocomplete"
+			<input id="search-input" placeholder="field=value and anotherField=anotherValue" data-autocomplete="autocomplete"
 				data-autocomplete-empty-message="nothing found" />
 		</div>
 		<label for="search-group-by-1">Group By:</label> 
@@ -36,7 +36,7 @@
 		<input id="search-date-from" class="input_date" type="text" value="{{oldestValue}}">
 		
 		<label for="search-date-range">Interval:</label>
-		<input id="search-date-range" type="text" list="ranges" required="" value="1 week" pattern="\d+ (second|minute|hour|day|week|month)s?">
+		<input id="search-date-range" type="text" list="ranges" required="required" value="1 week" pattern="\d+ (second|minute|hour|day|week|month)s?">
 		<datalist id="ranges">
 			<option value="60 seconds">
 			<option value="5 minutes">