diff --git a/mozilla/themes/blue/communicator/directory/directory.css b/mozilla/themes/blue/communicator/directory/directory.css
index bc415e29978..ee88c475caa 100644
--- a/mozilla/themes/blue/communicator/directory/directory.css
+++ b/mozilla/themes/blue/communicator/directory/directory.css
@@ -76,3 +76,8 @@ treeitem[type="DIRECTORY"][loading="true"] > treerow > treecell > .tree-cell-twi
     font-style            : italic;
   }
 
+treerow
+  {
+    min-height            : 19px;
+  }
+
diff --git a/mozilla/themes/classic/communicator/directory/directory.css b/mozilla/themes/classic/communicator/directory/directory.css
index d5298536773..a6cf21f1da4 100644
--- a/mozilla/themes/classic/communicator/directory/directory.css
+++ b/mozilla/themes/classic/communicator/directory/directory.css
@@ -76,6 +76,11 @@ treeitem[type="DIRECTORY"][loading="true"] > treerow > treecell > .tree-cell-twi
     font-style            : italic;
   }
 
+treerow
+  {
+    min-height            : 19px;
+  }
+
 /**
  * This fixes a bug. As you scroll down in a tree the computed column width
  * can change. That would make the columns shift durning scrolling.
diff --git a/mozilla/themes/modern/communicator/directory/directory.css b/mozilla/themes/modern/communicator/directory/directory.css
index 09d0ee66090..dd82f9c9085 100644
--- a/mozilla/themes/modern/communicator/directory/directory.css
+++ b/mozilla/themes/modern/communicator/directory/directory.css
@@ -63,6 +63,11 @@ treeitem[type="DIRECTORY"][loading="true"] > treerow > treecell > .tree-cell-twi
     font-style            : italic;
   }
 
+treerow
+  {
+    min-height            : 19px;
+  }
+
 /**
  * This fixes a bug. As you scroll down in a tree the computed column width
  * can change. That would make the columns shift durning scrolling.