diff --git a/SCHIZO/Items/PDAJournal.cs b/SCHIZO/Items/PDAJournal.cs
index f518150b..317ef912 100644
--- a/SCHIZO/Items/PDAJournal.cs
+++ b/SCHIZO/Items/PDAJournal.cs
@@ -10,8 +10,14 @@ partial class PDAJournal
 {
     protected override void Register()
     {
+        if (!encyData)
+        {
+            LOGGER.LogWarning($"{nameof(PDAJournal)} has no encyData, skipping registration");
+            return;
+        }
         encyData.Register(key);
-        Subtitles.SubtitlesHandler.RegisterMetadata(subtitles, encyData.description.text);
+        if (subtitles)
+            Subtitles.SubtitlesHandler.RegisterMetadata(subtitles, encyData.description.text);
         PDAJournalPrefab.Register(this);
     }
 
diff --git a/Unity/Assets/Scripts/SCHIZO/Items/PDAJournal.cs b/Unity/Assets/Scripts/SCHIZO/Items/PDAJournal.cs
index 9cb42350..111fe116 100644
--- a/Unity/Assets/Scripts/SCHIZO/Items/PDAJournal.cs
+++ b/Unity/Assets/Scripts/SCHIZO/Items/PDAJournal.cs
@@ -12,12 +12,13 @@ namespace SCHIZO.Items
     [DeclareBoxGroup("Below Zero")]
     public sealed partial class PDAJournal : ModRegistryItem
     {
-        [Careful]
+        [Careful, Required]
         public string key;
         [LabelText("PDA Hover Text")]
         public string pdaHandTargetText;
         [LabelText("PDA Hover Subtext")]
         public string pdaHandTargetSubtext;
+        [Required]
         public PDAEncyclopediaInfo encyData;
         public Subtitles.SubtitlesData subtitles;