diff --git a/Cython/Compiler/ModuleNode.py b/Cython/Compiler/ModuleNode.py
index cc291430e70c1c4a0ecfd839caad73a33618f828..933ea6ec8ace950b551b138137da4360f3b91fcc 100644
--- a/Cython/Compiler/ModuleNode.py
+++ b/Cython/Compiler/ModuleNode.py
@@ -2420,7 +2420,6 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
             module_name = '__Pyx_BUILTIN_MODULE_NAME'
             if type.name in Code.non_portable_builtins_map:
                 condition, replacement = Code.non_portable_builtins_map[type.name]
-                code.putln("#if %s" % condition)
             if objstruct in Code.basicsize_builtins_map:
                 # Some builtin types have a tp_basicsize which differs from sizeof(...):
                 sizeof_objstruct = Code.basicsize_builtins_map[objstruct]