diff --git a/rinja_derive/src/input.rs b/rinja_derive/src/input.rs
index bb74d639..d4009692 100644
--- a/rinja_derive/src/input.rs
+++ b/rinja_derive/src/input.rs
@@ -99,7 +99,8 @@ impl TemplateInput<'_> {
             .ok_or_else(|| {
                 CompileError::no_file_info(
                     format!(
-                        "no escaper defined for extension '{escaping}'. {}",
+                        "no escaper defined for extension '{escaping}'. You can define an escaper \
+                        in the config file (named `rinja.toml` by default). {}",
                         MsgValidEscapers(&config.escapers),
                     ),
                     *ext_span,
diff --git a/testing/tests/ui/no-such-escaper.stderr b/testing/tests/ui/no-such-escaper.stderr
index dd29f977..a212f63c 100644
--- a/testing/tests/ui/no-such-escaper.stderr
+++ b/testing/tests/ui/no-such-escaper.stderr
@@ -6,13 +6,13 @@ error: invalid escaper 'latex' for `escape` filter. The available extensions are
 6 |     source = r#"In LaTeX you write `{{text}}` like `{{text|escape("latex")}}`."#,
   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: no escaper defined for extension 'tex'. The available extensions are: "", "htm", "html", "j2", "jinja", "jinja2", "md", "none", "rinja", "svg", "txt", "xml", "yml"
+error: no escaper defined for extension 'tex'. You can define an escaper in the config file (named `rinja.toml` by default). The available extensions are: "", "htm", "html", "j2", "jinja", "jinja2", "md", "none", "rinja", "svg", "txt", "xml", "yml"
   --> tests/ui/no-such-escaper.rs:14:11
    |
 14 |     ext = "tex",
    |           ^^^^^
 
-error: no escaper defined for extension 'tex'. The available extensions are: "", "htm", "html", "j2", "jinja", "jinja2", "md", "none", "rinja", "svg", "txt", "xml", "yml"
+error: no escaper defined for extension 'tex'. You can define an escaper in the config file (named `rinja.toml` by default). The available extensions are: "", "htm", "html", "j2", "jinja", "jinja2", "md", "none", "rinja", "svg", "txt", "xml", "yml"
   --> tests/ui/no-such-escaper.rs:22:19
    |
 22 | #[template(path = "latex-file.tex")]