diff --git a/compiler/rustc_error_codes/src/error_codes/E0751.md b/compiler/rustc_error_codes/src/error_codes/E0751.md
index 8794f7868f302..825809b229aa4 100644
--- a/compiler/rustc_error_codes/src/error_codes/E0751.md
+++ b/compiler/rustc_error_codes/src/error_codes/E0751.md
@@ -9,4 +9,4 @@ impl !MyTrait for i32 { } // error!
 ```
 
 Negative implementations are a promise that the trait will never be implemented
-for the given types. Therefore, both cannot exists at the same time.
+for the given types. Therefore, both cannot exist at the same time.