diff --git a/about_allocation.go b/about_allocation.go
index 185a33a..3d09ee8 100644
--- a/about_allocation.go
+++ b/about_allocation.go
@@ -15,7 +15,7 @@ func aboutAllocation() {
   slice := make([]int, 3)
   assert(len(slice) == __int__) // make() creates slices of a given length
 
-  slice = make([]int, 3, __int__) // but can also take an optional capacity
+  slice = make([]int, 3, __positive_int__) // but can also take an optional capacity
   assert(cap(slice) == 20) 
 
   m := make(map[int]string)
diff --git a/setup_koans_test.go b/setup_koans_test.go
index 4dcd709..26c3bc1 100644
--- a/setup_koans_test.go
+++ b/setup_koans_test.go
@@ -13,6 +13,7 @@ import (
 const (
   __string__ string = "impossibly lame value"
   __int__ int = -1
+  __positive_int__ int = 42
   __byte__ byte = 255
   __bool__ bool = false // ugh
   __boolean__ bool = true // oh well