diff --git a/modules/traces/client/less/traces.less b/modules/traces/client/less/traces.less
index 6ffea6d5..f77b63d5 100644
--- a/modules/traces/client/less/traces.less
+++ b/modules/traces/client/less/traces.less
@@ -5,7 +5,7 @@ json-tree {
         &::before {
             content: '\25b6';
             position: absolute;
-            left: 0px;
+            left: 0;
             top: 2px;
             font-size: 10px;
             transition: transform .1s ease;