diff --git a/aegisub/dialog_style_editor.cpp b/aegisub/dialog_style_editor.cpp
index aaf0740a2..1452eef87 100644
--- a/aegisub/dialog_style_editor.cpp
+++ b/aegisub/dialog_style_editor.cpp
@@ -426,7 +426,8 @@ void DialogStyleEditor::Apply (bool apply,bool close) {
 		// Margins
 		work->SetMarginString(MarginL->GetValue(),0);
 		work->SetMarginString(MarginR->GetValue(),1);
-		work->SetMarginString(MarginV->GetValue(),2);
+		work->SetMarginString(MarginV->GetValue(),2); // make sure both top and bottom margins reflect vertical margin
+		work->SetMarginString(MarginV->GetValue(),3);
 
 		// Color alphas
 		ColorAlpha1->GetValue().ToLong(&templ);
diff --git a/aegisub/subs_edit_box.cpp b/aegisub/subs_edit_box.cpp
index 2483149ed..5e99c8ceb 100644
--- a/aegisub/subs_edit_box.cpp
+++ b/aegisub/subs_edit_box.cpp
@@ -748,6 +748,7 @@ void SubsEditBox::OnMarginVChange(wxCommandEvent &event) {
 		cur = grid->GetDialogue(sel[i]);
 		if (cur) {
 			cur->SetMarginString(MarginV->GetValue(),2);
+			cur->SetMarginString(MarginV->GetValue(),3); // also bottom margin for now
 			cur->UpdateData();
 		}
 	}