diff --git a/htdocs/theme/dolibarr/dolibarr.css b/htdocs/theme/dolibarr/dolibarr.css
index c3efd37a38b..0235d2d3d4c 100644
--- a/htdocs/theme/dolibarr/dolibarr.css
+++ b/htdocs/theme/dolibarr/dolibarr.css
@@ -207,7 +207,7 @@ tr.liste_titre {
                  font-size: 0.9em;
                  font-weight: bold;
                  border: 1px solid #8CACBB; 
-
+                 white-space: nowrap;
                  }
 
 tr.pair	{ 
diff --git a/htdocs/theme/eldy/eldy.css b/htdocs/theme/eldy/eldy.css
index e194613138c..4e6170ae4f1 100644
--- a/htdocs/theme/eldy/eldy.css
+++ b/htdocs/theme/eldy/eldy.css
@@ -220,6 +220,7 @@ border-left: 1px solid #FFFFFF;
 border-right: 1px solid #FFFFFF;
 border-top: 1px solid #FFFFFF;
 border-bottom: 1px solid #FFFFFF;
+white-space: nowrap;
 }
 
 td.border { 
diff --git a/htdocs/theme/rodolphe/rodolphe.css b/htdocs/theme/rodolphe/rodolphe.css
index 8ada4f19b29..972a0275ddc 100644
--- a/htdocs/theme/rodolphe/rodolphe.css
+++ b/htdocs/theme/rodolphe/rodolphe.css
@@ -223,7 +223,8 @@ tr.liste_titre {
                  background: #cacaca; 
                  border: 1px solid #000000;
                  font-weight: bold;
-                 text-decoration: none }
+                 text-decoration: none;
+                 white-space: nowrap }
 
 tr.pair	{ 
           background: #dfdfdf; 
diff --git a/htdocs/theme/yellow/yellow.css b/htdocs/theme/yellow/yellow.css
index 75b9464acc8..0dae411e99c 100644
--- a/htdocs/theme/yellow/yellow.css
+++ b/htdocs/theme/yellow/yellow.css
@@ -281,6 +281,7 @@ tr.liste_titre {
                  font-family: Helvetica, Verdana;
                  font-size: 1.0em;
                  font-weight: bold;
+                 white-space: nowrap;
                  }
 
 tr.pair {