diff --git a/src/NadekoBot.Generators/Command/CommandAttributesGenerator.cs b/src/NadekoBot.Generators/Command/CommandAttributesGenerator.cs
index 53bb53d32..9fee9d79c 100644
--- a/src/NadekoBot.Generators/Command/CommandAttributesGenerator.cs
+++ b/src/NadekoBot.Generators/Command/CommandAttributesGenerator.cs
@@ -64,7 +64,9 @@ public class CmdAttribute : System.Attribute
     public void Initialize(IncrementalGeneratorInitializationContext context)
     {
 // #if DEBUG
-//         SpinWait.SpinUntil(() => Debugger.IsAttached);
+//         if (!Debugger.IsAttached)
+//             Debugger.Launch();
+//         // SpinWait.SpinUntil(() => Debugger.IsAttached);
 // #endif
         context.RegisterPostInitializationOutput(static ctx => ctx.AddSource(
             "CmdAttribute.g.cs",
@@ -157,7 +159,8 @@ public class CmdAttribute : System.Attribute
             .Distinct();
         
         var methodModels = methods
-            .Select(x => MethodDeclarationToMethodModel(compilation, x!));
+            .Select(x => MethodDeclarationToMethodModel(compilation, x!))
+            .Where(static x => x is not null);
 
         var groups = methodModels
             .GroupBy(static x => $"{x.Namespace}.{string.Join(".", x.Classes)}");
@@ -187,11 +190,21 @@ public class CmdAttribute : System.Attribute
         return models;
     }
 
-    private static MethodModel MethodDeclarationToMethodModel(Compilation comp, MethodDeclarationSyntax decl)
+    private static MethodModel? MethodDeclarationToMethodModel(Compilation comp, MethodDeclarationSyntax decl)
     {
         // SpinWait.SpinUntil(static () => Debugger.IsAttached);
 
-        var semanticModel = comp.GetSemanticModel(decl.SyntaxTree);
+        SemanticModel semanticModel;
+        try
+        {
+            semanticModel = comp.GetSemanticModel(decl.SyntaxTree);
+        }
+        catch
+        {
+            // for some reason this method can throw "Not part of this compilation" argument exception
+            return null;
+        }
+
         var methodModel = new MethodModel(
             @params: decl.ParameterList.Parameters
                 .Where(p => p.Type is not null)