diff --git a/examples/busy.cpp b/examples/busy.cpp
index c564a3c4..2bc2716b 100644
--- a/examples/busy.cpp
+++ b/examples/busy.cpp
@@ -54,7 +54,7 @@ class Dialog final : public finalcut::FDialog
 Dialog::Dialog (FWidget* parent)
   : finalcut::FDialog{parent}
 {
-  setText ("Dialog");
+  FDialog::setText ("Dialog");
   finalcut::FDialog::setGeometry (FPoint{26, 5}, FSize{28, 10});
   seconds.setGeometry (FPoint{10, 2}, FSize{10, 1});
   seconds.setLabelText ("Seconds");
@@ -87,14 +87,14 @@ Dialog::Dialog (FWidget* parent)
 //----------------------------------------------------------------------
 void Dialog::adjustSize()
 {
+  finalcut::FDialog::adjustSize();
   int X = int((getDesktopWidth() - getWidth()) / 2);
   const int Y = 5;
 
   if ( X < 1 )
     X = 1;
 
-  setPos ({X, Y}, false);
-  finalcut::FDialog::adjustSize();
+  setPos (FPoint{X, Y}, false);
 }
 
 //----------------------------------------------------------------------
@@ -111,7 +111,7 @@ void Dialog::cb_start (const finalcut::FWidget*, const FDataPtr)
     return;
 
   busy_indicator.start();
-  addTimer(seconds.getValue() * 1000);
+  addTimer(int(seconds.getValue() * 1000));
 }
 
 //----------------------------------------------------------------------
diff --git a/src/fprogressbar.cpp b/src/fprogressbar.cpp
index b006546a..829b8af9 100644
--- a/src/fprogressbar.cpp
+++ b/src/fprogressbar.cpp
@@ -198,7 +198,7 @@ std::size_t FProgressbar::drawProgressIndicator()
   if ( len >= bar_length )
     return len;
 
-  if ( round(length) > len || FTerm::getMaxColor() < 16 )
+  if ( std::size_t(round(length)) > len || FTerm::getMaxColor() < 16 )
   {
     if ( FTerm::isMonochron() )
       setReverse(false);
diff --git a/src/fscrollbar.cpp b/src/fscrollbar.cpp
index 257aeca9..9dd0491f 100644
--- a/src/fscrollbar.cpp
+++ b/src/fscrollbar.cpp
@@ -732,9 +732,9 @@ void FScrollbar::jumpToClickPos (int x, int y)
 
   if ( bar_orientation == fc::vertical )
   {
-    if ( y >1 && y < int(getHeight()) )
+    if ( y > 1 && y < int(getHeight()) )
     {
-      new_val = int( round ( double(max - min) * (y - 2.0 - (slider_length/2))
+      new_val = int( round ( double(max - min) * (y - 2.0 - double(slider_length/2))
                            / double(bar_length - slider_length) ) );
     }
     else
@@ -746,7 +746,7 @@ void FScrollbar::jumpToClickPos (int x, int y)
 
     if ( x > 1 + nf && x < int(getWidth()) - nf )
     {
-      new_val = int( round ( double(max - min) * (x - 2.0 - nf - (slider_length/2))
+      new_val = int( round ( double(max - min) * (x - 2.0 - nf - double(slider_length/2))
                            / double(bar_length - slider_length) ) );
     }
     else
diff --git a/src/fspinbox.cpp b/src/fspinbox.cpp
index a1636757..c477b40d 100644
--- a/src/fspinbox.cpp
+++ b/src/fspinbox.cpp
@@ -428,7 +428,7 @@ void FSpinBox::forceFocus()
 }
 
 //----------------------------------------------------------------------
-void FSpinBox::cb_inputFieldActivate (finalcut::FWidget*, const FDataPtr)
+void FSpinBox::cb_inputFieldActivate (const finalcut::FWidget*, const FDataPtr)
 {
   processActivate();
 }
diff --git a/src/include/final/fbusyindicator.h b/src/include/final/fbusyindicator.h
index 42cd9359..9fb39bf8 100644
--- a/src/include/final/fbusyindicator.h
+++ b/src/include/final/fbusyindicator.h
@@ -85,7 +85,7 @@ class FBusyIndicator : public FToolTip
     const FString       getClassName() const override;
 
     // Inquiries
-    bool                isRunning();
+    bool                isRunning() const;
 
     // Methods
     void                start();
@@ -116,7 +116,7 @@ inline const FString FBusyIndicator::getClassName() const
 { return "FBusyIndicator"; }
 
 //----------------------------------------------------------------------
-inline bool FBusyIndicator::isRunning()
+inline bool FBusyIndicator::isRunning() const
 {
   return running;
 }
diff --git a/src/include/final/fspinbox.h b/src/include/final/fspinbox.h
index 65a67858..0b9f5b36 100644
--- a/src/include/final/fspinbox.h
+++ b/src/include/final/fspinbox.h
@@ -140,7 +140,7 @@ class FSpinBox : public FWidget
     void                forceFocus();
 
     // Callback methods
-    void                cb_inputFieldActivate (finalcut::FWidget*, const FDataPtr);
+    void                cb_inputFieldActivate (const finalcut::FWidget*, const FDataPtr);
     void                cb_inputFieldChange (finalcut::FWidget*, const FDataPtr);
 
     // Data members
diff --git a/src/include/final/fstartoptions.h b/src/include/final/fstartoptions.h
index 3c164130..6a0d1ad6 100644
--- a/src/include/final/fstartoptions.h
+++ b/src/include/final/fstartoptions.h
@@ -97,7 +97,7 @@ class FStartOptions final
     uInt16                      : 15;  // padding bits
 
     fc::encoding                encoding{fc::UNKNOWN};
-    std::ofstream               logfile_stream;
+    std::ofstream               logfile_stream{};
     static FStartOptions*       start_options;
 };