diff --git a/scripts/startup/bl_ui/space_view3d.py b/scripts/startup/bl_ui/space_view3d.py
index 300cb99a074..5024a7c6c72 100644
--- a/scripts/startup/bl_ui/space_view3d.py
+++ b/scripts/startup/bl_ui/space_view3d.py
@@ -1291,7 +1291,7 @@ class VIEW3D_MT_transform(VIEW3D_MT_transform_base, Menu):
             layout.operator("transform.skin_resize")
         elif context.mode in {'EDIT_CURVE', 'EDIT_GREASE_PENCIL', 'EDIT_CURVES', 'EDIT_POINTCLOUD'}:
             layout.operator("transform.transform", text="Radius").mode = 'CURVE_SHRINKFATTEN'
-        if context.mode in 'EDIT_GREASE_PENCIL':
+        if context.mode == 'EDIT_GREASE_PENCIL':
             layout.operator("transform.transform", text="Opacity").mode = 'GPENCIL_OPACITY'
 
         if context.mode != 'EDIT_CURVES' and context.mode != 'EDIT_GREASE_PENCIL':