diff --git a/sleepyhead/Graphs/gLineChart.cpp b/sleepyhead/Graphs/gLineChart.cpp
index 3c1c7e69..46b3d9ca 100644
--- a/sleepyhead/Graphs/gLineChart.cpp
+++ b/sleepyhead/Graphs/gLineChart.cpp
@@ -1019,7 +1019,10 @@ void gLineChart::paint(QPainter &painter, gGraph &w, const QRegion &region)
             painter.setPen(Qt::black);
             painter.drawText(rec, Qt::AlignBottom | Qt::AlignRight, text);
 
-            painter.setPen(QPen(chan.defaultColor(), 1 * ratioY));
+            float ps = 1 * ratioY;
+            ps = qMax(ps, 1.0f);
+
+            painter.setPen(QPen(chan.defaultColor(), ps));
             int linewidth = (10 * ratioX);
             int yp = rec.top()+(rec.height()/2);
             painter.drawLine(rec.left()-linewidth, yp , rec.left()-(2 * ratioX), yp);
@@ -1051,7 +1054,9 @@ void gLineChart::paint(QPainter &painter, gGraph &w, const QRegion &region)
 
         QColor color = chan.calc[dot.type].color;
         color.setAlpha(200);
-        painter.setPen(QPen(QBrush(color),1 * ratioY,Qt::DotLine));
+        float ps = 1 * ratioY;
+        ps = qMax(ps, 1.0f);
+        painter.setPen(QPen(QBrush(color), ps,Qt::DotLine));
 
         int yp = rec.top()+(rec.height()/2);
         painter.drawLine(rec.left()-linewidth, yp , rec.left()-(2 * ratioX), yp);
diff --git a/sleepyhead/Graphs/gXAxis.cpp b/sleepyhead/Graphs/gXAxis.cpp
index 84811dc9..4e597814 100644
--- a/sleepyhead/Graphs/gXAxis.cpp
+++ b/sleepyhead/Graphs/gXAxis.cpp
@@ -53,7 +53,11 @@ int gXAxis::minimumHeight()
 {
     QFontMetrics fm(*defaultfont);
     int h = fm.height();
+#if defined(Q_OS_MAC)
     return 9+h;
+#else
+    return 11+h;
+#endif
 }
 
 void gXAxis::paint(QPainter &painter, gGraph &w, const QRegion &region)
@@ -243,9 +247,12 @@ void gXAxis::paint(QPainter &painter, gGraph &w, const QRegion &region)
 
         //py+=usepixmap ? 20 : left;
 
-        int mintop = top + 4.0 * (float(y) / 10.0);
+        int mintop = top + 3.0 * (float(y) / 10.0);
         int majtop = top + 6.0 * (float(y) / 10.0);
-        int texttop = majtop + y + 2; // 18*w.printScaleY();
+        int texttop = majtop + y; // 18*w.printScaleY();
+#if defined (Q_OS_MAC)
+           texttop += 2
+#endif
 
         // Fill in the minor tick marks up to the first major alignment tick