diff --git a/js/mine.js b/js/mine.js
index 31f2564..e912441 100644
--- a/js/mine.js
+++ b/js/mine.js
@@ -328,7 +328,7 @@ var Mine = function() {
 						newMap[y-1][x+1] = '*';
 						newMap[y][x] = ' ';
 						if ('R' == map[y-2][x+1]) this._crushed();
-					} else if ((below == '*') && ' ' == map[y-1][x-y] && ' ' == map[y][x-1]) {
+					} else if ((below == '*') && ' ' == map[y-1][x-1] && ' ' == map[y][x-1]) {
 						// fall left
 						newMap[y-1][x-1] = '*';
 						newMap[y][x] = ' ';