diff --git a/JetKarmaBot/Commands/AwardCommand.cs b/JetKarmaBot/Commands/AwardCommand.cs
index 23072c6..49c7066 100644
--- a/JetKarmaBot/Commands/AwardCommand.cs
+++ b/JetKarmaBot/Commands/AwardCommand.cs
@@ -91,12 +91,12 @@ namespace JetKarmaBot.Commands
 
                 var text = args.Message.Text;
                 string awardTypeAcc, awardTypeSym;
-                sbyte awardTypeId = 0;
+                sbyte? awardTypeId;
                 if (awardTypeText == null || awardTypeText == "star")
                 {
                     awardTypeAcc = currentLocale["jetkarmabot.star.accusative"];
                     awardTypeSym = "★";
-                    awardTypeId = 0;
+                    awardTypeId = null;
                 }
                 else
                 {
diff --git a/JetKarmaBot/Commands/LeaderboardCommand.cs b/JetKarmaBot/Commands/LeaderboardCommand.cs
index 940b82c..349c466 100644
--- a/JetKarmaBot/Commands/LeaderboardCommand.cs
+++ b/JetKarmaBot/Commands/LeaderboardCommand.cs
@@ -28,10 +28,10 @@ namespace JetKarmaBot.Commands
                 string response;
 
                 string awardTypeSym;
-                sbyte awardTypeId;
+                sbyte? awardTypeId;
                 if (string.IsNullOrWhiteSpace(awardTypeName) || awardTypeName == "star")
                 {
-                    awardTypeId = 0;
+                    awardTypeId = null;
                     awardTypeSym = "★";
                 }
                 else
diff --git a/JetKarmaBot/Commands/StatusCommand.cs b/JetKarmaBot/Commands/StatusCommand.cs
index 2ecc55c..9b493e5 100644
--- a/JetKarmaBot/Commands/StatusCommand.cs
+++ b/JetKarmaBot/Commands/StatusCommand.cs
@@ -54,11 +54,11 @@ namespace JetKarmaBot.Commands
                 }
                 else
                 {
-                    sbyte awardTypeId;
+                    sbyte? awardTypeId;
                     string awardTypeSym;
                     if (awardTypeName == "star")
                     {
-                        awardTypeId = 0;
+                        awardTypeId = null;
                         awardTypeSym = "★";
                     }
                     else