diff --git a/extensions/theme-2026/themes/2026-dark.json b/extensions/theme-2026/themes/2026-dark.json
index 26e6241d748..06cafb2e978 100644
--- a/extensions/theme-2026/themes/2026-dark.json
+++ b/extensions/theme-2026/themes/2026-dark.json
@@ -10,7 +10,6 @@
 		"descriptionForeground": "#8C8C8C",
 		"icon.foreground": "#8C8C8C",
 		"focusBorder": "#3994BCB3",
-		"contrastBorder": "#333536",
 		"textBlockQuote.background": "#242526",
 		"textBlockQuote.border": "#2A2B2CFF",
 		"textCodeBlock.background": "#242526",
diff --git a/extensions/theme-2026/themes/2026-light.json b/extensions/theme-2026/themes/2026-light.json
index df59066c02a..1818a2c066d 100644
--- a/extensions/theme-2026/themes/2026-light.json
+++ b/extensions/theme-2026/themes/2026-light.json
@@ -10,7 +10,6 @@
 		"descriptionForeground": "#606060",
 		"icon.foreground": "#606060",
 		"focusBorder": "#0069CCFF",
-		"contrastBorder": "#F0F1F2FF",
 		"textBlockQuote.background": "#EAEAEA",
 		"textBlockQuote.border": "#F0F1F2FF",
 		"textCodeBlock.background": "#EAEAEA",
diff --git a/src/vs/workbench/contrib/chat/browser/chatEditing/media/chatEditingEditorOverlay.css b/src/vs/workbench/contrib/chat/browser/chatEditing/media/chatEditingEditorOverlay.css
index 0c26b35ff49..fc44d44f42f 100644
--- a/src/vs/workbench/contrib/chat/browser/chatEditing/media/chatEditingEditorOverlay.css
+++ b/src/vs/workbench/contrib/chat/browser/chatEditing/media/chatEditingEditorOverlay.css
@@ -8,7 +8,7 @@
 	color: var(--vscode-foreground);
 	background-color: var(--vscode-editorWidget-background);
 	border-radius: 6px;
-	border: 1px solid var(--vscode-contrastBorder);
+	border: 1px solid var(--vscode-editorWidget-border);
 	display: flex;
 	align-items: center;
 	justify-content: center;
diff --git a/src/vs/workbench/contrib/chat/browser/chatEditing/media/chatEditorController.css b/src/vs/workbench/contrib/chat/browser/chatEditing/media/chatEditorController.css
index e24c87525bf..5e5b64f1fcd 100644
--- a/src/vs/workbench/contrib/chat/browser/chatEditing/media/chatEditorController.css
+++ b/src/vs/workbench/contrib/chat/browser/chatEditing/media/chatEditorController.css
@@ -21,7 +21,7 @@
 	border-radius: 6px;
 	background-color: var(--vscode-editorWidget-background);
 	color: var(--vscode-foreground);
-	border: 1px solid var(--vscode-contrastBorder);
+	border: 1px solid var(--vscode-editorWidget-border);
 	overflow: hidden;
 }