diff --git a/crosstl/src/backend/DirectX/DirectxCrossGLCodeGen.py b/crosstl/src/backend/DirectX/DirectxCrossGLCodeGen.py
index 35e9dfba..9dc170a6 100644
--- a/crosstl/src/backend/DirectX/DirectxCrossGLCodeGen.py
+++ b/crosstl/src/backend/DirectX/DirectxCrossGLCodeGen.py
@@ -36,7 +36,6 @@ def __init__(self):
         }
 
     def generate(self, ast):
-        print(ast)
         self.process_structs(ast)
         code = "shader main {\n"
 
diff --git a/crosstl/src/backend/Metal/MetalCrossGLCodeGen.py b/crosstl/src/backend/Metal/MetalCrossGLCodeGen.py
index dd4d48f5..f8fe89a5 100644
--- a/crosstl/src/backend/Metal/MetalCrossGLCodeGen.py
+++ b/crosstl/src/backend/Metal/MetalCrossGLCodeGen.py
@@ -238,4 +238,6 @@ def generate_expression(self, expr, is_main=False):
             return str(expr)
 
     def map_type(self, metal_type):
-        return self.type_map.get(metal_type, metal_type)
+        if metal_type:
+            return self.type_map.get(metal_type)
+        return metal_type