diff --git a/toonz/sources/toonz/main.cpp b/toonz/sources/toonz/main.cpp
index a1bcfe2..bfa8206 100644
--- a/toonz/sources/toonz/main.cpp
+++ b/toonz/sources/toonz/main.cpp
@@ -369,10 +369,12 @@ int main(int argc, char *argv[]) {
   // splash screen
   QPixmap splashPixmap(":Resources/splash.png");
 #ifdef _WIN32
-  a.setFont(QFont("Arial", 10));
+  QFont font("Arial", -1);
 #else
-  a.setFont(QFont("Helvetica", 10));
+  QFont font("Helvetica", -1);
 #endif
+  font.setPixelSize(13);
+  a.setFont(font);
 
   QString offsetStr("\n\n\n\n\n\n\n\n");
 
diff --git a/toonz/sources/toonz/xsheetviewer.h b/toonz/sources/toonz/xsheetviewer.h
index a88b78e..5596ca4 100644
--- a/toonz/sources/toonz/xsheetviewer.h
+++ b/toonz/sources/toonz/xsheetviewer.h
@@ -13,13 +13,8 @@
 #include "cellkeyframeselection.h"
 #include "toonzqt/spreadsheetviewer.h"
 
-#ifdef _WIN32
 #define XSHEET_FONT_PX_SIZE 12
 #define H_ADJUST 2
-#else
-#define XSHEET_FONT_PX_SIZE 14
-#define H_ADJUST 0
-#endif
 
 // forward declaration
 class TXsheet;
diff --git a/toonz/sources/toonzqt/functionsheet.cpp b/toonz/sources/toonzqt/functionsheet.cpp
index 5294fcb..9d86d2d 100644
--- a/toonz/sources/toonzqt/functionsheet.cpp
+++ b/toonz/sources/toonzqt/functionsheet.cpp
@@ -641,10 +641,11 @@ void FunctionSheetCellViewer::drawCells(QPainter &painter, int r0, int c0,
         }
 
 #ifdef _WIN32
-        static QFont font("Arial", 9, QFont::Normal);
+        static QFont font("Arial", -1, QFont::Bold);
 #else
-        static QFont font("Helvetica", 9, QFont::Normal);
+        static QFont font("Helvetica", -1, QFont::Bold);
 #endif
+        font.setPixelSize(12);
         painter.setFont(font);
         painter.drawText(cellRect.adjusted(10, 0, 0, 0),
                          Qt::AlignVCenter | Qt::AlignLeft, text);
diff --git a/toonz/sources/toonzqt/spreadsheetviewer.cpp b/toonz/sources/toonzqt/spreadsheetviewer.cpp
index 8c375e9..3858bf2 100644
--- a/toonz/sources/toonzqt/spreadsheetviewer.cpp
+++ b/toonz/sources/toonzqt/spreadsheetviewer.cpp
@@ -237,10 +237,11 @@ DragTool *RowPanel::createDragTool(QMouseEvent *) {
 
 void RowPanel::drawRows(QPainter &p, int r0, int r1) {
 #ifdef _WIN32
-  static QFont font("Arial", 9, QFont::Bold);
+  static QFont font("Arial", -1, QFont::Bold);
 #else
-  static QFont font("Helvetica", 9, QFont::Bold);
+  static QFont font("Helvetica", -1, QFont::Bold);
 #endif
+  font.setPixelSize(12);
   p.setFont(font);
 
   QRect visibleRect = visibleRegion().boundingRect();