diff --git a/toonz/sources/include/toonzqt/paramfield.h b/toonz/sources/include/toonzqt/paramfield.h
index f20848f4..ca892c42 100644
--- a/toonz/sources/include/toonzqt/paramfield.h
+++ b/toonz/sources/include/toonzqt/paramfield.h
@@ -91,7 +91,7 @@ public:
 
   virtual void setPointValue(const TPointD &p){};
 
-  virtual QSize getPreferedSize() { return QSize(200, 28); }
+  virtual QSize getPreferredSize() { return QSize(200, 28); }
 
   static void setFxHandle(TFxHandle *fxHandle);
 
@@ -388,7 +388,7 @@ public:
 
   void updateField(double value) override;
 
-  QSize getPreferedSize() override { return QSize(260, 26); }
+  QSize getPreferredSize() override { return QSize(260, 26); }
   void setPrecision(int precision) override;
 
 protected slots:
@@ -412,7 +412,7 @@ public:
 
   void updateField(DoublePair value) override;
 
-  QSize getPreferedSize() override { return QSize(300, 20); }
+  QSize getPreferredSize() override { return QSize(300, 20); }
   void setPrecision(int precision) override;
 
 protected slots:
@@ -437,7 +437,7 @@ public:
 
   void updateField(TPointD value) override;
 
-  QSize getPreferedSize() override { return QSize(270, 28); }
+  QSize getPreferredSize() override { return QSize(270, 28); }
 
 protected slots:
   void onChange(bool);
@@ -459,7 +459,7 @@ public:
 
   void updateField(TPixel32 value) override;
 
-  QSize getPreferedSize() override { return QSize(480, 40); }
+  QSize getPreferredSize() override { return QSize(480, 40); }
 
   /*-- RgbLinkButtonの実行のため --*/
   TPixel32 getColor();
@@ -508,7 +508,7 @@ public:
 
   void setParams();
 
-  QSize getPreferedSize() override { return QSize(477, 60); }
+  QSize getPreferredSize() override { return QSize(477, 60); }
 
 protected slots:
   void onKeyToggled();
@@ -563,7 +563,7 @@ public:
                 int frame) override;
   void update(int frame) override;
 
-  QSize getPreferedSize() override { return QSize(150, 20); }
+  QSize getPreferredSize() override { return QSize(150, 20); }
 
 protected slots:
   void onChange(const QString &str);
@@ -586,7 +586,7 @@ public:
                 int frame) override;
   void update(int frame) override;
 
-  QSize getPreferedSize() override { return QSize(20, 15); }
+  QSize getPreferredSize() override { return QSize(20, 15); }
 
 protected slots:
   void onToggled(bool checked);
@@ -615,7 +615,7 @@ public:
                 int frame) override;
   void update(int frame) override;
 
-  QSize getPreferedSize() override { return QSize(50, 19); }
+  QSize getPreferredSize() override { return QSize(50, 19); }
 
 protected slots:
   void onChange(bool isDragging = false);
@@ -655,7 +655,7 @@ public:
                 int frame) override;
   void update(int frame) override;
 
-  QSize getPreferedSize() override {
+  QSize getPreferredSize() override {
     if (m_textFld)
       return QSize(100, 20);
     else
@@ -685,7 +685,7 @@ public:
                 int frame) override;
   void update(int frame) override;
 
-  QSize getPreferedSize() override { return QSize(150, 20); }
+  QSize getPreferredSize() override { return QSize(150, 20); }
 
 protected slots:
   void findStyles(const QFont &font);
@@ -711,7 +711,7 @@ public:
 
   void setParams();
 
-  QSize getPreferedSize() override;
+  QSize getPreferredSize() override;
 
 protected slots:
   void onChannelChanged(int);
diff --git a/toonz/sources/toonzqt/fxsettings.cpp b/toonz/sources/toonzqt/fxsettings.cpp
index 6a175d21..58fec72c 100644
--- a/toonz/sources/toonzqt/fxsettings.cpp
+++ b/toonz/sources/toonzqt/fxsettings.cpp
@@ -591,7 +591,7 @@ QSize getItemSize(QLayoutItem *item) {
   }
 
   ParamField *pF = dynamic_cast<ParamField *>(item->widget());
-  if (pF) return pF->getPreferedSize();
+  if (pF) return pF->getPreferredSize();
 
   Separator *sep = dynamic_cast<Separator *>(item->widget());
   if (sep) return QSize(0, 16);
diff --git a/toonz/sources/toonzqt/paramfield.cpp b/toonz/sources/toonzqt/paramfield.cpp
index bdde43d4..7851d675 100644
--- a/toonz/sources/toonzqt/paramfield.cpp
+++ b/toonz/sources/toonzqt/paramfield.cpp
@@ -1863,7 +1863,7 @@ void ToneCurveParamField::setParams() {
 
 //-----------------------------------------------------------------------------
 
-QSize ToneCurveParamField::getPreferedSize() {
+QSize ToneCurveParamField::getPreferredSize() {
   if (m_toneCurveField->isEnlarged())
     return QSize(676, 640);
   else