diff --git a/js/sql.js b/js/sql.js
index 6f15c599d..a0dbae88f 100644
--- a/js/sql.js
+++ b/js/sql.js
@@ -436,7 +436,7 @@ $(document).ready(function() {
 
             if($this_field.is(':not(.not_null)')){
             	// add a checkbox to mark null for all the field that are nullable.
-            	$this_field.html('<div>Null :<input type="checkbox" class="checkbox_null_'+ field_name +'"></div>');
+            	$this_field.html('<div class="null_div">Null :<input type="checkbox" class="checkbox_null_'+ field_name +'"></div>');
             	// check the 'checkbox_null_<field_name>' if the value is null
             	if($this_field.is('.null')) {
             		$('.checkbox_null_' + field_name).attr('checked', true);
@@ -454,7 +454,7 @@ $(document).ready(function() {
             	})
 
             } else {
-            	$this_field.html('');
+            	$this_field.html('<div class="null_div"></div>');
             }
 
             // In each input sibling, wrap the current value in a textarea
diff --git a/themes/original/css/theme_right.css.php b/themes/original/css/theme_right.css.php
index 272221d36..b1bc75310 100644
--- a/themes/original/css/theme_right.css.php
+++ b/themes/original/css/theme_right.css.php
@@ -159,6 +159,12 @@ fieldset.tblFooters {
     clear:              both;
 }
 
+div.null_div {
+    height: 20px;
+    text-align: center;
+    font-style:normal;
+}
+
 fieldset .formelement {
     float:              <?php echo $left; ?>;
     margin-<?php echo $right; ?>:       0.5em;
@@ -235,6 +241,14 @@ th.condition {
     border: 1px solid <?php echo $GLOBALS['cfg']['BrowseMarkerBackground']; ?>;
 }
 
+/**
+ * cells with the value NULL
+ */
+td.null {
+    font-style: italic;
+    text-align: <?php echo $right; ?>;
+}
+
 table .value {
     text-align:         <?php echo $right; ?>;
     white-space:        normal;