diff --git a/Packages/nadena.dev.modular-avatar/Editor/ErrorReporting/ErrorLog.cs b/Packages/nadena.dev.modular-avatar/Editor/ErrorReporting/ErrorLog.cs
index 26b98951..5aa74499 100644
--- a/Packages/nadena.dev.modular-avatar/Editor/ErrorReporting/ErrorLog.cs
+++ b/Packages/nadena.dev.modular-avatar/Editor/ErrorReporting/ErrorLog.cs
@@ -293,7 +293,8 @@ namespace nadena.dev.modular_avatar.editor.ErrorReporting
 
         internal static void Log(ReportLevel level, string code, object[] strings, params Object[] objects)
         {
-            ErrorLog errorLog = new ErrorLog(level, code, strings, objects);
+            ErrorLog errorLog =
+                new ErrorLog(level, code, strings: strings.Select(s => s.ToString()).ToArray(), objects);
 
             var avatarReport = CurrentReport._currentAvatar;
             if (avatarReport == null)
@@ -307,7 +308,7 @@ namespace nadena.dev.modular_avatar.editor.ErrorReporting
 
         internal static void LogFatal(string code, object[] strings, params Object[] objects)
         {
-            Log(ReportLevel.Error, code, strings, objects);
+            Log(ReportLevel.Error, code, strings: strings, objects: objects);
             if (CurrentReport._currentAvatar != null)
             {
                 CurrentReport._currentAvatar.successful = false;
diff --git a/Packages/nadena.dev.modular-avatar/Editor/Menu/ActionProcessing/ActionGenerator.cs b/Packages/nadena.dev.modular-avatar/Editor/Menu/ActionProcessing/ActionGenerator.cs
index c8d4a7a3..98b0f869 100644
--- a/Packages/nadena.dev.modular-avatar/Editor/Menu/ActionProcessing/ActionGenerator.cs
+++ b/Packages/nadena.dev.modular-avatar/Editor/Menu/ActionProcessing/ActionGenerator.cs
@@ -358,8 +358,10 @@ namespace nadena.dev.modular_avatar.core.editor
             var defaultItems = items.Where(i => i.isDefault).ToList();
             if (defaultItems.Count > 1)
             {
-                BuildReport.LogFatal("animation_gen.multiple_defaults", Array.Empty<object>(),
-                    defaultItems.ToArray<UnityEngine.Object>());
+                BuildReport.LogFatal("animation_gen.multiple_defaults",
+                    strings: Array.Empty<object>(),
+                    objects: defaultItems.ToArray<UnityEngine.Object>()
+                );
                 defaultItems.RemoveRange(1, defaultItems.Count - 1);
             }