diff --git a/CHANGELOG.md b/CHANGELOG.md
index cb86647..2ab729c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,8 +5,9 @@
 * NEW FEATURE: `Tournament::getArbiters` for multiple arbiters in 1 tournament
 * ENHANCEMENT: `Class::getBinaryData` methods return null if field is non-existent
 * CHANGE: `Tournament::getArbiter` accepts a `int` parameter representing the order of the arbiters
-* BUGFIX: `Player:GetId` returns elo instead of id
-* BUGFIX: `Tournament::CalculateBuchholz` did not return the correct score when player had unplayed rounds
+* BUGFIX: `Player:getId` returns elo instead of id
+* BUGFIX: `Tournament::calculateBuchholz` did not return the correct score when player had unplayed rounds
+* BUGFIX: `Tournament::calculateMutualResult` Returned NULL if result was invalid
 
 ## v1.1.2 (Release: 21-jun-2019)
 * ENHANCEMENT: Added update section to dist/readme.md
diff --git a/src/Tournament.php b/src/Tournament.php
index c0a4670..d47793d 100644
--- a/src/Tournament.php
+++ b/src/Tournament.php
@@ -621,7 +621,7 @@ class Tournament
             }
         }
         if ($totalmatches != count($interestingplayers)) {
-            $points = null;
+            $points = 0;
         }
         return $points;
     }