diff --git a/app/services/tournament_services/generate_tournament_matches.rb b/app/services/tournament_services/generate_tournament_matches.rb
index fd5ca47..b8a39f4 100644
--- a/app/services/tournament_services/generate_tournament_matches.rb
+++ b/app/services/tournament_services/generate_tournament_matches.rb
@@ -8,6 +8,7 @@ class GenerateTournamentMatches
         @tournament.curently_generating_matches = 1
         @tournament.save
         unAssignBouts
+        unAssignMats
         PoolToBracketMatchGeneration.new(@tournament).generatePoolToBracketMatchesWeight(weight) if @tournament.tournament_type == "Pool to bracket"
         postMatchCreationActions
         PoolToBracketGenerateLoserNames.new(@tournament).assignLoserNamesWeight(weight) if @tournament.tournament_type == "Pool to bracket"
@@ -71,6 +72,13 @@ class GenerateTournamentMatches
       end
     end
 
+    def unAssignMats
+      matches = @tournament.matches.reload
+      matches.each do |m|
+        m.mat_id = nil
+      end
+    end
+
     def unAssignBouts
       bout_counts = Hash.new(0)
       @tournament.matches.each do |m|