diff --git a/Item-Specifications.md b/Item-Specifications.md
index bc816d1..4cf0f73 100644
--- a/Item-Specifications.md
+++ b/Item-Specifications.md
@@ -41,7 +41,7 @@ Here, onType creates one or more "patterns" (an array of types to match against
 
 Next, let's look at a method like addition of two complex numbers that accepts many types (any instantiation of Complex) but not all types, and has dependencies:
 ```
-export const add = onType([Complex, Complex]], (math, [T, U]) => {
+export const add = onType([Complex, Complex], (math, [T, U]) => {
    const add = math.add.resolve(T.Base, U.Base)
    const complex = math.complex.resolve(add.returns, add.returns)
    return Returns(