diff --git a/src/common/QskScaleEngine.cpp b/src/common/QskScaleEngine.cpp
index 0fa7dc7f..bac3fff6 100644
--- a/src/common/QskScaleEngine.cpp
+++ b/src/common/QskScaleEngine.cpp
@@ -3,7 +3,7 @@
  * This file may be used under the terms of the QSkinny License, Version 1.0
  *****************************************************************************/
 
-// code cpoied from Qwt - with permission from the author ( = myself )
+// code cpopied from Qwt - with permission from the author ( = myself )
 
 #include "QskScaleEngine.h"
 #include "QskFunctions.h"
@@ -23,7 +23,7 @@ namespace
 
     inline int fuzzyCompare( double value1, double value2, double intervalSize )
     {
-        const double eps = qAbs( 1.0e-6 * intervalSize );
+        const double eps = std::abs( 1.0e-6 * intervalSize );
 
         if ( value2 - value1 > eps )
             return -1;
diff --git a/src/common/QskScaleEngine.h b/src/common/QskScaleEngine.h
index 2bc26f1d..2111816f 100644
--- a/src/common/QskScaleEngine.h
+++ b/src/common/QskScaleEngine.h
@@ -35,8 +35,8 @@ class QSK_EXPORT QskScaleEngine
     void setAttributes( Attributes );
     Attributes attributes() const;
 
-    QskScaleTickmarks divideScale(qreal x1, qreal x2,
-        int maxMajorSteps, int maxMinorSteps, qreal stepSize = 0.0) const;
+    QskScaleTickmarks divideScale( qreal x1, qreal x2,
+        int maxMajorSteps, int maxMinorSteps, qreal stepSize = 0.0 ) const;
 
     void autoScale( int maxNumSteps, qreal& x1, qreal& x2, qreal& stepSize ) const;