diff --git a/src/mathed/ChangeLog b/src/mathed/ChangeLog
index 1034326f4a..4df2d54075 100644
--- a/src/mathed/ChangeLog
+++ b/src/mathed/ChangeLog
@@ -9,6 +9,9 @@
 	* formulabase.C: fix memory leak
 
 	* math_cursor.C: ^ now copies selection into new srriptinset
+	
+	* xarray.C: less crude MathXArray::x2pos for preciser cursor positioning
+	  using the mouse
 
 2001-07-22  Jean-Marc Lasgouttes  <lasgouttes@lyx.org>
 
diff --git a/src/mathed/xarray.C b/src/mathed/xarray.C
index 0c19f1e8bc..269bfafefa 100644
--- a/src/mathed/xarray.C
+++ b/src/mathed/xarray.C
@@ -96,9 +96,16 @@ int MathXArray::pos2x(int targetpos) const
 
 int MathXArray::x2pos(int targetx) const
 {
-	int pos = 0;
-	for (int x = 0; x < targetx && pos < data_.size(); data_.next(pos))
-		x += width(pos);
+	int pos   = 0;
+	int lastx = 0;
+	int currx = 0;
+	while (currx < targetx && pos < data_.size()) {
+		lastx = currx;
+		currx += width(pos);
+ 		data_.next(pos);
+	}
+	if (abs(lastx - targetx) < abs(currx - targetx))
+		data_.prev(pos);
 	return pos;
 }