diff --git a/pep-0485.txt b/pep-0485.txt
index 026b8075a..595dc0bcc 100644
--- a/pep-0485.txt
+++ b/pep-0485.txt
@@ -179,11 +179,11 @@ definition of relative tolerance.
 
 Example:
 
-For the question: "Is the value of a within x% of b?", Using b to
+For the question: "Is the value of a within 10% of b?", Using b to
 scale the percent error clearly defines the result.
 
 However, as this approach is not symmetric, a may be within 10% of b,
-but b is not within x% of a. Consider the case::
+but b is not within 10% of a. Consider the case::
 
   a =  9.0
   b = 10.0