diff --git a/src/Generator/Generators/CLI/CLISourcesTemplate.cs b/src/Generator/Generators/CLI/CLISourcesTemplate.cs
index 9bb47ef0..1dbe96ee 100644
--- a/src/Generator/Generators/CLI/CLISourcesTemplate.cs
+++ b/src/Generator/Generators/CLI/CLISourcesTemplate.cs
@@ -545,7 +545,7 @@ namespace CppSharp.Generators.CLI
 
         private bool GenerateClassConstructorBase(Class @class, bool isIntPtr, Method method = null)
         {
-            var hasBase = @class.HasBase && !@class.Bases[0].Class.Ignore;
+            var hasBase = @class.HasBase && @class.Bases[0].IsClass && !@class.Bases[0].Class.Ignore;
             if (!hasBase)
                 return false;