diff --git a/src/librustc_error_codes/error_codes/E0220.md b/src/librustc_error_codes/error_codes/E0220.md
index 43e075b522b4e..ddc54007c8c52 100644
--- a/src/librustc_error_codes/error_codes/E0220.md
+++ b/src/librustc_error_codes/error_codes/E0220.md
@@ -1,4 +1,5 @@
-You used an associated type which isn't defined in the trait.
+The associated type used was not defined in the trait.
+
 Erroneous code example:
 
 ```compile_fail,E0220
diff --git a/src/librustc_error_codes/error_codes/E0221.md b/src/librustc_error_codes/error_codes/E0221.md
index 53fabf490e2c3..26111ca429333 100644
--- a/src/librustc_error_codes/error_codes/E0221.md
+++ b/src/librustc_error_codes/error_codes/E0221.md
@@ -1,5 +1,6 @@
 An attempt was made to retrieve an associated type, but the type was ambiguous.
-For example:
+
+Erroneous code example:
 
 ```compile_fail,E0221
 trait T1 {}
diff --git a/src/librustc_error_codes/error_codes/E0222.md b/src/librustc_error_codes/error_codes/E0222.md
index 66b6c4d712b70..fbf1b8d703314 100644
--- a/src/librustc_error_codes/error_codes/E0222.md
+++ b/src/librustc_error_codes/error_codes/E0222.md
@@ -1,5 +1,6 @@
 An attempt was made to constrain an associated type.
-For example:
+
+Erroneous code example:
 
 ```compile_fail,E0222
 pub trait Vehicle {