diff --git a/library/src/main/java/com/alamkanak/weekview/WeekView.java b/library/src/main/java/com/alamkanak/weekview/WeekView.java
index a4a673b11..ddbd1f5b2 100755
--- a/library/src/main/java/com/alamkanak/weekview/WeekView.java
+++ b/library/src/main/java/com/alamkanak/weekview/WeekView.java
@@ -532,7 +532,7 @@ private void drawTimeColumnAndAxes(Canvas canvas) {
         canvas.drawRect(0, mHeaderHeight + mHeaderRowPadding * 2, mHeaderColumnWidth, getHeight(), mHeaderColumnBackgroundPaint);
 
         // Clip to paint in left column only.
-        canvas.clipRect(0, mHeaderHeight + mHeaderRowPadding * 2, mHeaderColumnWidth, getHeight(), Region.Op.REPLACE);
+        canvas.clipRect(0, mHeaderHeight + mHeaderRowPadding * 2, mHeaderColumnWidth, getHeight(), Region.Op.DIFFERENCE);
 
         for (int i = 0; i < 24; i++) {
             float top = mHeaderHeight + mHeaderRowPadding * 2 + mCurrentOrigin.y + mHourHeight * i + mHeaderMarginBottom;
@@ -626,7 +626,7 @@ else if (mNewHourHeight > mMaxHourHeight)
         }
 
         // Clip to paint events only.
-        canvas.clipRect(mHeaderColumnWidth, mHeaderHeight + mHeaderRowPadding * 2 + mHeaderMarginBottom + mTimeTextHeight/2, getWidth(), getHeight(), Region.Op.REPLACE);
+        canvas.clipRect(mHeaderColumnWidth, mHeaderHeight + mHeaderRowPadding * 2 + mHeaderMarginBottom + mTimeTextHeight/2, getWidth(), getHeight(), Region.Op.DIFFERENCE);
 
         // Iterate through each day.
         Calendar oldFirstVisibleDay = mFirstVisibleDay;
@@ -714,11 +714,11 @@ else if (day.before(today)) {
         }
 
         // Hide everything in the first cell (top left corner).
-        canvas.clipRect(0, 0, mTimeTextWidth + mHeaderColumnPadding * 2, mHeaderHeight + mHeaderRowPadding * 2, Region.Op.REPLACE);
+        canvas.clipRect(0, 0, mTimeTextWidth + mHeaderColumnPadding * 2, mHeaderHeight + mHeaderRowPadding * 2, Region.Op.DIFFERENCE);
         canvas.drawRect(0, 0, mTimeTextWidth + mHeaderColumnPadding * 2, mHeaderHeight + mHeaderRowPadding * 2, mHeaderBackgroundPaint);
 
         // Clip to paint header row only.
-        canvas.clipRect(mHeaderColumnWidth, 0, getWidth(), mHeaderHeight + mHeaderRowPadding * 2, Region.Op.REPLACE);
+        canvas.clipRect(mHeaderColumnWidth, 0, getWidth(), mHeaderHeight + mHeaderRowPadding * 2, Region.Op.DIFFERENCE);
 
         // Draw the header background.
         canvas.drawRect(0, 0, getWidth(), mHeaderHeight + mHeaderRowPadding * 2, mHeaderBackgroundPaint);