diff --git a/src/compiler/codegen_internal.h b/src/compiler/codegen_internal.h
index 3694d3eef..21a6d499f 100644
--- a/src/compiler/codegen_internal.h
+++ b/src/compiler/codegen_internal.h
@@ -37,10 +37,12 @@ static inline Type *type_lowering(Type *type)
 				type = type->decl->enums.type_info->type;
 				continue;
 			case TYPE_FUNC_PTR:
-				if (type->pointer->function.prototype->raw_type == type->pointer) return type;
-				return type_get_func_ptr(type->pointer->function.prototype->raw_type);
-			case TYPE_FUNC_RAW:
-				return type->function.prototype->raw_type;
+			{
+				Type *raw_func = type->pointer;
+				if (raw_func->function.prototype && raw_func->function.prototype->raw_type == raw_func) return type;
+				FunctionPrototype *proto = type_get_resolved_prototype(raw_func);
+				return type_get_func_ptr(proto->raw_type);
+			}
 			case TYPE_INTERFACE:
 				return type_any;
 			case TYPE_ANYFAULT: