diff --git a/Triangulation_3/demo/Triangulation_3/Viewer.cpp b/Triangulation_3/demo/Triangulation_3/Viewer.cpp
index 27d7058a800..d5b06649b12 100644
--- a/Triangulation_3/demo/Triangulation_3/Viewer.cpp
+++ b/Triangulation_3/demo/Triangulation_3/Viewer.cpp
@@ -971,7 +971,7 @@ void Viewer::wheelEvent(QWheelEvent *event)
     //  negative value: rotate backwards toward the user.
     m_fRadius += (event->delta()*1. / m_iStep ); // inc-/decrease by 0.1 per step
     if( m_fRadius < 0.1 )
-      m_fRadius = 0.1;
+      m_fRadius = 0.1f;
 
     // redraw
     updateGL();
@@ -985,7 +985,7 @@ void Viewer::wheelEvent(QWheelEvent *event)
   	float origR = m_fRadius;
     m_fRadius += (event->delta()*1. / m_iStep ); // inc-/decrease by 0.1 per step
     if( m_fRadius < 0.1 )
-      m_fRadius = 0.1;
+      m_fRadius = 0.1f;
     // update the new point and its conflict region
     if( m_hasNewPt ) {
       origR = m_fRadius / origR;
@@ -1003,7 +1003,7 @@ void Viewer::wheelEvent(QWheelEvent *event)
   	float origR = m_fRadius;
     m_fRadius += (event->delta()*1. / m_iStep ); // inc-/decrease by 0.1 per step
     if( m_fRadius < 0.1 )
-      m_fRadius = 0.1;
+      m_fRadius = 0.1f;
     origR = m_fRadius / origR;
     Point_3 pt = m_pScene->m_vhArray.at( m_vidMoving )->point();
     // note: QList::operator[] return a modifiable reference;