diff --git a/tests/ui/lexer/lex-bad-str-literal-as-char-3.fixed b/tests/ui/lexer/lex-bad-str-literal-as-char-3.fixed
deleted file mode 100644
index 3fbe0ea1dab..00000000000
--- a/tests/ui/lexer/lex-bad-str-literal-as-char-3.fixed
+++ /dev/null
@@ -1,4 +0,0 @@
-//@ run-rustfix
-fn main() {
-    println!("hello world"); //~ ERROR unterminated character literal
-}
diff --git a/tests/ui/lexer/lex-bad-str-literal-as-char-3.rs b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rs
index 289f3f1d657..2c0eda97853 100644
--- a/tests/ui/lexer/lex-bad-str-literal-as-char-3.rs
+++ b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rs
@@ -1,4 +1,8 @@
-//@ run-rustfix
+//@ revisions: rust2015 rust2018 rust2021
+//@[rust2018] edition:2018
+//@[rust2021] edition:2021
 fn main() {
-    println!('hello world'); //~ ERROR unterminated character literal
+    println!('hello world');
+    //[rust2015,rust2018,rust2021]~^ ERROR unterminated character literal
+    //[rust2021]~^^ ERROR prefix `world` is unknown
 }
diff --git a/tests/ui/lexer/lex-bad-str-literal-as-char-3.stderr b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2015.stderr
similarity index 79%
rename from tests/ui/lexer/lex-bad-str-literal-as-char-3.stderr
rename to tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2015.stderr
index 262f7856983..06f12742667 100644
--- a/tests/ui/lexer/lex-bad-str-literal-as-char-3.stderr
+++ b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2015.stderr
@@ -1,8 +1,8 @@
 error[E0762]: unterminated character literal
-  --> $DIR/lex-bad-str-literal-as-char-3.rs:3:26
+  --> $DIR/lex-bad-str-literal-as-char-3.rs:5:26
    |
 LL |     println!('hello world');
-   |                          ^^^^
+   |                          ^^^
    |
 help: if you meant to write a string literal, use double quotes
    |
diff --git a/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2018.stderr b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2018.stderr
new file mode 100644
index 00000000000..06f12742667
--- /dev/null
+++ b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2018.stderr
@@ -0,0 +1,14 @@
+error[E0762]: unterminated character literal
+  --> $DIR/lex-bad-str-literal-as-char-3.rs:5:26
+   |
+LL |     println!('hello world');
+   |                          ^^^
+   |
+help: if you meant to write a string literal, use double quotes
+   |
+LL |     println!("hello world");
+   |              ~           ~
+
+error: aborting due to 1 previous error
+
+For more information about this error, try `rustc --explain E0762`.
diff --git a/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2021.stderr b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2021.stderr
new file mode 100644
index 00000000000..4170560cfcb
--- /dev/null
+++ b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2021.stderr
@@ -0,0 +1,26 @@
+error: prefix `world` is unknown
+  --> $DIR/lex-bad-str-literal-as-char-3.rs:5:21
+   |
+LL |     println!('hello world');
+   |                     ^^^^^ unknown prefix
+   |
+   = note: prefixed identifiers and literals are reserved since Rust 2021
+help: if you meant to write a string literal, use double quotes
+   |
+LL |     println!("hello world");
+   |              ~           ~
+
+error[E0762]: unterminated character literal
+  --> $DIR/lex-bad-str-literal-as-char-3.rs:5:26
+   |
+LL |     println!('hello world');
+   |                          ^^^
+   |
+help: if you meant to write a string literal, use double quotes
+   |
+LL |     println!("hello world");
+   |              ~           ~
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0762`.