diff --git a/test.js b/test.js
index 0575ab4..9ebcdba 100755
--- a/test.js
+++ b/test.js
@@ -196,8 +196,8 @@ var tests = {
 		return instances(setup)
 			.map(function([k, o]){
 				// NOTE: not all callables are instances of Function...
-				//assert(typeof(o) == 'function' 
-				//	&& o instanceof Function, 'instanceof Function')
+				assert(typeof(o) == 'function' 
+					&& o instanceof Function, 'instanceof Function')
 				return typeof(o) == 'function'
 					&& assert(o(), 'call', k) }) },
 }