diff --git a/docs/stats.php b/docs/stats.php
index 332d5d4..774afe8 100755
--- a/docs/stats.php
+++ b/docs/stats.php
@@ -64,7 +64,7 @@
 					foreach ($result as $userc) {
 						$matrixe[$usera['username']][$userb['username']] += $matrixf[$usera['username']][$userc['username']] * $matrixf[$userc['username']][$userb['username']];
 					}
-					$pr[$usera['username']] = $prold[$userb['username']] * $matrixe[$usera['username']][$userb['username']];
+					$pr[$usera['username']] += $prold[$userb['username']] * $matrixe[$usera['username']][$userb['username']];
 				}
 			}