diff --git a/include/cyclone/types.h b/include/cyclone/types.h
index 5c1d065e..8a3a5156 100644
--- a/include/cyclone/types.h
+++ b/include/cyclone/types.h
@@ -66,12 +66,6 @@ enum object_tag {
 #define obj_is_not_closure(obj) \
   ((obj == NULL) || is_value_type(obj) || (type_of(obj) > macro_tag))
 
-/**
- * Returns a true value if object is not a closure, or false otherwise
- */
-#define type_is_pair_prim(clo) (obj_is_not_closure(clo))
-
-
 /**
  * Defines the size of object tags
  * \ingroup objects