diff --git a/devtools/client/debugger/src/components/SecondaryPanes/Expressions.css b/devtools/client/debugger/src/components/SecondaryPanes/Expressions.css
index 7584f828c0d9..a8a7725e6679 100644
--- a/devtools/client/debugger/src/components/SecondaryPanes/Expressions.css
+++ b/devtools/client/debugger/src/components/SecondaryPanes/Expressions.css
@@ -126,7 +126,7 @@
 }
 
 .expressions-list .tree.object-inspector .node.object-node {
-  max-width: calc(113% - var(--breakpoint-expression-right-clear-space));
+  max-width: calc(100% - 20px);
   min-width: 0;
   text-overflow: ellipsis;
   overflow: hidden;