diff --git a/src/vs/workbench/contrib/styleOverrides/browser/media/roundedCorners.css b/src/vs/workbench/contrib/styleOverrides/browser/media/roundedCorners.css
index cb777a19500c2d..83bd7efe51d2fa 100644
--- a/src/vs/workbench/contrib/styleOverrides/browser/media/roundedCorners.css
+++ b/src/vs/workbench/contrib/styleOverrides/browser/media/roundedCorners.css
@@ -219,6 +219,14 @@
 	overflow: hidden;
 }
 
+/* Only boundary rows adopt the overlay's outer corners; interior rows keep the Control radius. */
+.style-override .editor-widget.suggest-widget .monaco-list .monaco-list-row:not(.separator):first-child {
+	border-radius: var(--vscode-cornerRadius-large) var(--vscode-cornerRadius-large) 0 0 !important;
+}
+.style-override .editor-widget.suggest-widget .monaco-list .monaco-list-row:not(.separator):last-child {
+	border-radius: 0 0 var(--vscode-cornerRadius-large) var(--vscode-cornerRadius-large) !important;
+}
+
 /* Context menus and general menu surfaces */
 .style-override .monaco-menu .monaco-action-bar.vertical {
 	border-radius: var(--vscode-cornerRadius-large) !important;