diff --git a/src/main/java/wtf/beatrice/hidekobot/listeners/ButtonInteractionListener.java b/src/main/java/wtf/beatrice/hidekobot/listeners/ButtonInteractionListener.java
index 7a46038..928f826 100644
--- a/src/main/java/wtf/beatrice/hidekobot/listeners/ButtonInteractionListener.java
+++ b/src/main/java/wtf/beatrice/hidekobot/listeners/ButtonInteractionListener.java
@@ -2,6 +2,8 @@ package wtf.beatrice.hidekobot.listeners;
 
 import net.dv8tion.jda.api.events.interaction.component.ButtonInteractionEvent;
 import net.dv8tion.jda.api.hooks.ListenerAdapter;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import wtf.beatrice.hidekobot.commands.base.CoinFlip;
 import wtf.beatrice.hidekobot.commands.base.Trivia;
 import wtf.beatrice.hidekobot.commands.base.UrbanDictionary;
@@ -10,6 +12,8 @@ import wtf.beatrice.hidekobot.util.CommandUtil;
 public class ButtonInteractionListener extends ListenerAdapter
 {
 
+    private static final Logger LOGGER = LoggerFactory.getLogger(ButtonInteractionListener.class);
+
     @Override
     public void onButtonInteraction(ButtonInteractionEvent event)
     {
@@ -31,6 +35,10 @@ public class ButtonInteractionListener extends ListenerAdapter
             case "trivia_wrong_1", "trivia_wrong_2", "trivia_wrong_3" ->
                     Trivia.handleAnswer(event, Trivia.AnswerType.WRONG);
 
+            // error handling
+            default -> LOGGER.warn("Received unhandled {}", event.getClass().getSimpleName());
+
+
         }
 
     }
diff --git a/src/main/java/wtf/beatrice/hidekobot/listeners/SelectMenuInteractionListener.java b/src/main/java/wtf/beatrice/hidekobot/listeners/SelectMenuInteractionListener.java
index b74b8bb..6a2c1f8 100644
--- a/src/main/java/wtf/beatrice/hidekobot/listeners/SelectMenuInteractionListener.java
+++ b/src/main/java/wtf/beatrice/hidekobot/listeners/SelectMenuInteractionListener.java
@@ -2,11 +2,15 @@ package wtf.beatrice.hidekobot.listeners;
 
 import net.dv8tion.jda.api.events.interaction.component.StringSelectInteractionEvent;
 import net.dv8tion.jda.api.hooks.ListenerAdapter;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import wtf.beatrice.hidekobot.commands.base.Trivia;
 
 public class SelectMenuInteractionListener extends ListenerAdapter
 {
 
+    private static final Logger LOGGER = LoggerFactory.getLogger(SelectMenuInteractionListener.class);
+
     @Override
     public void onStringSelectInteraction(StringSelectInteractionEvent event)
     {
@@ -14,6 +18,9 @@ public class SelectMenuInteractionListener extends ListenerAdapter
 
             // trivia
             case "trivia_categories" -> Trivia.handleMenuSelection(event);
+
+            // error handling
+            default -> LOGGER.warn("Received unhandled {}", event.getClass().getSimpleName());
         }
     }
 }
diff --git a/src/main/java/wtf/beatrice/hidekobot/util/FormatUtil.java b/src/main/java/wtf/beatrice/hidekobot/util/FormatUtil.java
index 2056dab..14ceca1 100644
--- a/src/main/java/wtf/beatrice/hidekobot/util/FormatUtil.java
+++ b/src/main/java/wtf/beatrice/hidekobot/util/FormatUtil.java
@@ -148,7 +148,7 @@ public class FormatUtil
         // we won't do any sanitization, because this is a private method, and
         // we are only accessing it with things that we know for sure are already sanitized.
         unitName = unitName.toLowerCase();
-        TemporalUnit timeUnit = null;
+        TemporalUnit timeUnit;
 
         /*
         parsing table
@@ -166,6 +166,7 @@ public class FormatUtil
             case "m", "mi", "min", "minute", "minutes" -> timeUnit = ChronoUnit.MINUTES;
             case "h", "ho", "hr", "hour", "hours" -> timeUnit = ChronoUnit.HOURS;
             case "d", "day", "days" -> timeUnit = ChronoUnit.DAYS;
+            default -> timeUnit = null;
         }
 
         return timeUnit;