diff --git a/base/number.jl b/base/number.jl
index 39908222027c1..72df50a9c3134 100644
--- a/base/number.jl
+++ b/base/number.jl
@@ -316,7 +316,7 @@ zero(::Type{Union{}}, slurp...) = Union{}(0)
 
 """
     one(x)
-    one(T::type)
+    one(T::Type)
 
 Return a multiplicative identity for `x`: a value such that
 `one(x)*x == x*one(x) == x`. If the multiplicative identity can