diff --git a/material_maker/theme/classic_base.tres b/material_maker/theme/classic_base.tres
index 5e759d08f..9abf37dad 100644
--- a/material_maker/theme/classic_base.tres
+++ b/material_maker/theme/classic_base.tres
@@ -1243,6 +1243,7 @@ PopupMenu/icons/unchecked = SubResource("AtlasTexture_bxwwn")
 PopupMenu/icons/unchecked_disabled = SubResource("AtlasTexture_ftwxj")
 PopupMenu/styles/hover = SubResource("StyleBoxFlat_fq0uc")
 PopupMenu/styles/panel = SubResource("StyleBoxFlat_8p2hu")
+ScrollContainer/constants/scrollbar_h_separation = 8
 TabBar/constants/h_separation = 6
 TabBar/icons/close = SubResource("AtlasTexture_1wpt7")
 TabBar/styles/tab_focus = SubResource("StyleBoxFlat_7nmb2")
diff --git a/material_maker/theme/default.tres b/material_maker/theme/default.tres
index f19d6072b..426112128 100644
--- a/material_maker/theme/default.tres
+++ b/material_maker/theme/default.tres
@@ -1492,6 +1492,7 @@ PopupMenu/styles/hover = SubResource("StyleBoxFlat_fq0uc")
 PopupMenu/styles/panel = SubResource("StyleBoxFlat_8p2hu")
 PopupPanel/styles/panel = SubResource("StyleBoxFlat_rqlqa")
 RichTextLabel/colors/default_color = Color(1, 1, 1, 1)
+ScrollContainer/constants/scrollbar_h_separation = 8
 SpinBox/colors/down_disabled_icon_modulate = Color(0.875, 0.875, 0.875, 0.5)
 SpinBox/colors/down_hover_icon_modulate = Color(1, 1, 1, 1)
 SpinBox/colors/down_icon_modulate = Color(1, 1, 1, 1)