diff --git a/Dalamud/Data/DataManager.cs b/Dalamud/Data/DataManager.cs
index 6b400ce2d..9894f91af 100644
--- a/Dalamud/Data/DataManager.cs
+++ b/Dalamud/Data/DataManager.cs
@@ -124,7 +124,7 @@ namespace Dalamud.Data
         /// </summary>
         /// <typeparam name="T">The excel sheet type to get.</typeparam>
         /// <returns>The <see cref="ExcelSheet{T}"/>, giving access to game rows.</returns>
-        public ExcelSheet<T> GetExcelSheet<T>() where T : IExcelRow
+        public ExcelSheet<T> GetExcelSheet<T>() where T : class, IExcelRow
         {
             return this.Excel.GetSheet<T>();
         }
@@ -135,7 +135,7 @@ namespace Dalamud.Data
         /// <param name="language">Language of the sheet to get.</param>
         /// <typeparam name="T">The excel sheet type to get.</typeparam>
         /// <returns>The <see cref="ExcelSheet{T}"/>, giving access to game rows.</returns>
-        public ExcelSheet<T> GetExcelSheet<T>(ClientLanguage language) where T : IExcelRow {
+        public ExcelSheet<T> GetExcelSheet<T>(ClientLanguage language) where T : class, IExcelRow {
             var lang = language switch {
                 ClientLanguage.Japanese => Language.Japanese,
                 ClientLanguage.English => Language.English,
diff --git a/Dalamud/Data/TransientSheet/Completion.cs b/Dalamud/Data/TransientSheet/Completion.cs
index 2e36b97b2..9ab8a3b06 100644
--- a/Dalamud/Data/TransientSheet/Completion.cs
+++ b/Dalamud/Data/TransientSheet/Completion.cs
@@ -1,3 +1,4 @@
+using Lumina.Data;
 using Lumina.Excel;
 
 namespace Dalamud.Data.TransientSheet
@@ -27,7 +28,7 @@ namespace Dalamud.Data.TransientSheet
         public uint RowId { get; set; }
         public uint SubRowId { get; set; }
 
-        public void PopulateData( RowParser parser, Lumina.Lumina lumina )
+        public void PopulateData( RowParser parser, Lumina.Lumina lumina, Language language )
         {
             RowId = parser.Row;
             SubRowId = parser.SubRow;
diff --git a/Dalamud/Data/TransientSheet/PetMirage.cs b/Dalamud/Data/TransientSheet/PetMirage.cs
index ee3eb63d3..255fb5669 100644
--- a/Dalamud/Data/TransientSheet/PetMirage.cs
+++ b/Dalamud/Data/TransientSheet/PetMirage.cs
@@ -1,4 +1,5 @@
 using Lumina.Excel;
+using Lumina.Data;
 
 namespace Dalamud.Data.TransientSheet
 {
@@ -201,7 +202,7 @@ namespace Dalamud.Data.TransientSheet
         public uint RowId { get; set; }
         public uint SubRowId { get; set; }
 
-        public void PopulateData( RowParser parser, Lumina.Lumina lumina )
+        public void PopulateData( RowParser parser, Lumina.Lumina lumina, Language language )
         {
             RowId = parser.Row;
             SubRowId = parser.SubRow;