diff --git a/src/librustc_error_codes/error_codes/E0502.md b/src/librustc_error_codes/error_codes/E0502.md
index f15c05d558d85..b90c59f580737 100644
--- a/src/librustc_error_codes/error_codes/E0502.md
+++ b/src/librustc_error_codes/error_codes/E0502.md
@@ -1,5 +1,4 @@
-This error indicates that you are trying to borrow a variable as mutable when it
-has already been borrowed as immutable.
+A variable already borrowed as immutable was borrowed as mutable.
 
 Erroneous code example: