diff --git a/extensions/theme-defaults/themes/dark_modern.json b/extensions/theme-defaults/themes/dark_modern.json
index 14fc09e91c1da..646e2779236b9 100644
--- a/extensions/theme-defaults/themes/dark_modern.json
+++ b/extensions/theme-defaults/themes/dark_modern.json
@@ -23,10 +23,6 @@
 		"checkbox.border": "#ffffff1f",
 		"debugToolBar.background": "#181818",
 		"descriptionForeground": "#8b949e",
-		"diffEditor.insertedLineBackground": "#23863633",
-		"diffEditor.insertedTextBackground": "#2386364d",
-		"diffEditor.removedLineBackground": "#da363333",
-		"diffEditor.removedTextBackground": "#da36334d",
 		"dropdown.background": "#313131",
 		"dropdown.border": "#ffffff1f",
 		"dropdown.foreground": "#cccccc",
diff --git a/extensions/theme-defaults/themes/light_modern.json b/extensions/theme-defaults/themes/light_modern.json
index 5640a255dc156..c9e486fbab4cb 100644
--- a/extensions/theme-defaults/themes/light_modern.json
+++ b/extensions/theme-defaults/themes/light_modern.json
@@ -22,10 +22,6 @@
 		"checkbox.background": "#f8f8f8",
 		"checkbox.border": "#CECECE",
 		"descriptionForeground": "#3b3b3b",
-		"diffEditor.insertedLineBackground": "#23863633",
-		"diffEditor.insertedTextBackground": "#2386364d",
-		"diffEditor.removedLineBackground": "#da363333",
-		"diffEditor.removedTextBackground": "#da36334d",
 		"dropdown.background": "#ffffff",
 		"dropdown.border": "#CECECE",
 		"dropdown.foreground": "#3b3b3b",