diff --git a/htdocs/comm/clients.php b/htdocs/comm/clients.php
index 8089117abca..b160d4066b2 100644
--- a/htdocs/comm/clients.php
+++ b/htdocs/comm/clients.php
@@ -114,9 +114,9 @@ if ($result)
   print '<form method="get" action="clients.php">';
   print '<tr class="liste_titre">';
   print '<td valign="right">';
-  print '<input type="text" name="search_nom" value="'.stripslashes($_GET["search_nom"]).'">';
+  print '<input type="text" class="flat" name="search_nom" value="'.stripslashes($_GET["search_nom"]).'">';
   print '</td><td valign="right">';
-  print '<input type="text" name="search_code" value="'.$_GET["search_code"].'">';
+  print '<input type="text" class="flat" name="search_code" value="'.$_GET["search_code"].'">';
   print '</td><td>&nbsp;</td><td align="center"><input class="button" type="submit" value="'.$langs->trans("Search").'">';
   print "</td>";
   print "</tr>\n";
diff --git a/htdocs/comm/prospect/prospects.php b/htdocs/comm/prospect/prospects.php
index 2a40dcd2687..afbd6e965df 100644
--- a/htdocs/comm/prospect/prospects.php
+++ b/htdocs/comm/prospect/prospects.php
@@ -135,9 +135,9 @@ if ($result)
   print '<form method="get" action="prospects.php">';
   print '<tr class="liste_titre">';
   print '<td valign="right">';
-  print '<input type="text" name="search_nom" value="'.$_GET["search_nom"].'">';
+  print '<input type="text" class="flat" name="search_nom" value="'.$_GET["search_nom"].'">';
   print '</td><td>';
-  print '<input type="text" name="search_ville" value="'.$_GET["search_nom"].'">';
+  print '<input type="text" class="flat" name="search_ville" value="'.$_GET["search_nom"].'">';
   print "</td><td>&nbsp;</td>";
   print "<td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td>";
   print "</tr>\n";
diff --git a/htdocs/theme/dev/new.css b/htdocs/theme/dev/new.css
index 14d3b806045..4c73259be94 100644
--- a/htdocs/theme/dev/new.css
+++ b/htdocs/theme/dev/new.css
@@ -229,3 +229,11 @@ div.formsearch
   vertical-align: center;
 }
 
+.flat  {
+	font-family: arial,verdana,helvetica, sans-serif;
+	font-size: 100%;
+	font-weight: normal;
+	border: 1px solid #ccd7e0;
+	background-image : url(img/button_bg.gif);
+	background-position : bottom;
+}
diff --git a/htdocs/theme/eldy/eldy.css b/htdocs/theme/eldy/eldy.css
index 1d986d0b7b3..7c679d02921 100644
--- a/htdocs/theme/eldy/eldy.css
+++ b/htdocs/theme/eldy/eldy.css
@@ -251,6 +251,7 @@ div.help
 .flat  {
 	font-family: arial,verdana,helvetica, sans-serif;
 	font-size: 100%;
+	font-weight: normal;
 	border: 1px solid #ccd7e0;
 	background-image : url(img/button_bg.gif);
 	background-position : bottom;
diff --git a/htdocs/theme/freelug/freelug.css b/htdocs/theme/freelug/freelug.css
index 342df73676a..1cefc4ddaa3 100644
--- a/htdocs/theme/freelug/freelug.css
+++ b/htdocs/theme/freelug/freelug.css
@@ -247,6 +247,7 @@ div.help
 .flat  {
 	font-family: arial,verdana,helvetica, sans-serif;
 	font-size: 100%;
+	font-weight: normal;
 	border: 1px solid #ccd7e0;
 	background-image : url(img/button_bg.gif);
 	background-position : bottom;
diff --git a/htdocs/theme/yellow/yellow.css b/htdocs/theme/yellow/yellow.css
index cca40888a64..c6e41d6f352 100644
--- a/htdocs/theme/yellow/yellow.css
+++ b/htdocs/theme/yellow/yellow.css
@@ -251,6 +251,7 @@ div.help
 .flat  {
 	font-family: arial,verdana,helvetica, sans-serif;
 	font-size: 100%;
+	font-weight: normal;
 	border: 1px solid #ccd7e0;
 	background-image : url(img/button_bg.gif);
 	background-position : bottom;