diff --git a/stfslider.cpp b/stfslider.cpp
index f0fc906..c80c9d9 100644
--- a/stfslider.cpp
+++ b/stfslider.cpp
@@ -18,13 +18,13 @@ STFSlider::STFSlider(const QColor &color, QWidget *parent) : QWidget(parent)
 
     if(color == Qt::white)
     {
-        setMaximumHeight(15);
-        setMinimumHeight(15);
+        setMaximumHeight(16);
+        setMinimumHeight(16);
     }
     else
     {
-        setMaximumHeight(7);
-        setMinimumHeight(7);
+        setMaximumHeight(10);
+        setMinimumHeight(10);
     }
     m_blackPoint = 0;
     m_midPoint = 0.5;