diff --git a/calculatorpp/src/main/java/org/solovyev/android/calculator/overlay/CalculatorOverlayService.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/overlay/CalculatorOverlayService.java
index 2504ae57..e6fbea27 100644
--- a/calculatorpp/src/main/java/org/solovyev/android/calculator/overlay/CalculatorOverlayService.java
+++ b/calculatorpp/src/main/java/org/solovyev/android/calculator/overlay/CalculatorOverlayService.java
@@ -146,6 +146,8 @@ public class CalculatorOverlayService extends Service implements ExternalCalcula
 							}
 						} else {
 							move = true;
+							x0 = event.getX();
+							y0 = event.getY();
 						}
 
 						return true;