diff --git a/src/vs/workbench/contrib/notebook/browser/media/notebook.css b/src/vs/workbench/contrib/notebook/browser/media/notebook.css
index 286c3cff9f2..5131c5ad1ca 100644
--- a/src/vs/workbench/contrib/notebook/browser/media/notebook.css
+++ b/src/vs/workbench/contrib/notebook/browser/media/notebook.css
@@ -600,7 +600,7 @@
 .monaco-workbench .notebookOverlay > .cell-list-container > .monaco-list > .monaco-scrollable-element > .monaco-list-rows > .monaco-list-row:hover .run-button-container .monaco-toolbar,
 .monaco-workbench .notebookOverlay > .cell-list-container > .monaco-list > .monaco-scrollable-element > .monaco-list-rows > .monaco-list-row.focused .run-button-container .monaco-toolbar,
 .monaco-workbench .notebookOverlay > .cell-list-container > .monaco-list > .monaco-scrollable-element > .monaco-list-rows > .monaco-list-row .cell-run-toolbar-dropdown-active .run-button-container .monaco-toolbar,
-.monaco-workbench .notebookOverlay > .cell-list-container > .monaco-list > .monaco-scrollable-element > .monaco-list-rows > .monaco-list-row.cell-output-hover .run-button-container .monaco-toolbar {
+.monaco-workbench .notebookOverlay > .cell-list-container > .monaco-list > .monaco-scrollable-element > .monaco-list-rows > .monaco-list-row .cell-output-hover .run-button-container .monaco-toolbar {
 	visibility: visible;
 }