diff --git a/devtools/client/netmonitor/src/assets/styles/RequestList.css b/devtools/client/netmonitor/src/assets/styles/RequestList.css
index 0b26bbeb8e1c..a643cf489758 100644
--- a/devtools/client/netmonitor/src/assets/styles/RequestList.css
+++ b/devtools/client/netmonitor/src/assets/styles/RequestList.css
@@ -100,7 +100,7 @@
 .requests-list-headers-wrapper {
   position: sticky;
   top: 0;
-  z-index: 1000;
+  z-index: 1;
   width: 100%;
   padding: 0;
 }