diff --git a/toonz/sources/toonz/xshnoteviewer.cpp b/toonz/sources/toonz/xshnoteviewer.cpp
index 6db3a19..ace0049 100644
--- a/toonz/sources/toonz/xshnoteviewer.cpp
+++ b/toonz/sources/toonz/xshnoteviewer.cpp
@@ -140,12 +140,14 @@ NotePopup::NotePopup(XsheetViewer *viewer, int noteIndex)
 
   QPushButton *addNoteButton = new QPushButton(tr("Post"));
   addNoteButton->setMinimumSize(50, 20);
+  addNoteButton->setObjectName("PushButton_NoPadding");
   ret = ret &&
         connect(addNoteButton, SIGNAL(pressed()), this, SLOT(onNoteAdded()));
   layout->addWidget(addNoteButton, row, col, 1, 1);
   col++;
   QPushButton *discardNoteButton = new QPushButton(tr("Discard"));
   discardNoteButton->setMinimumSize(50, 20);
+  discardNoteButton->setObjectName("PushButton_NoPadding");
   ret = ret && connect(discardNoteButton, SIGNAL(pressed()), this,
                        SLOT(onNoteDiscarded()));
   layout->addWidget(discardNoteButton, row, col, 1, 1);