diff --git a/modules/system/system-rtl.css b/modules/system/system-rtl.css
index a6fd4264423e..6a523f47ff60 100644
--- a/modules/system/system-rtl.css
+++ b/modules/system/system-rtl.css
@@ -97,3 +97,8 @@ a.tabledrag-handle {
   margin: -0.4em -0.5em -0.4em 0;
   padding: 0.42em 0.5em 0.42em 1.5em;
 }
+div.indentation {
+  margin: -0.4em -0.4em -0.4em 0.2em;
+  padding: 0.42em 0.6em 0.42em 0;
+  float: right;
+}
diff --git a/modules/system/system.css b/modules/system/system.css
index fb96adb4769c..564f6f7973ba 100644
--- a/modules/system/system.css
+++ b/modules/system/system.css
@@ -47,9 +47,9 @@ thead th {
 div.indentation {
   width: 20px;
   height: 1.7em;
-  margin: -0.4em 0.2em -0.4em -0.4em;
-  padding: 0.42em 0 0.42em 0.6em;
-  float: left;
+  margin: -0.4em 0.2em -0.4em -0.4em; /* LTR */
+  padding: 0.42em 0 0.42em 0.6em; /* LTR */
+  float: left; /* LTR */
 }
 div.tree-child {
   background: url(../../misc/tree.png) no-repeat 11px center;