diff --git a/suite/themes/modern/global/tree.css b/suite/themes/modern/global/tree.css
index 28ca1a38848..2b264951960 100644
--- a/suite/themes/modern/global/tree.css
+++ b/suite/themes/modern/global/tree.css
@@ -58,7 +58,8 @@ tree {
 
 treechildren:-moz-tree-row {
   border: 1px solid transparent;
-  height: 18px;
+  min-height: 18px;
+  height: 1.3em;
 }
 
 treechildren:-moz-tree-row(selected) {