diff --git a/crates/mdbook-html/src/html_handlebars/helpers/resources.rs b/crates/mdbook-html/src/html_handlebars/helpers/resources.rs
index 01b9738f..f3cf9cd4 100644
--- a/crates/mdbook-html/src/html_handlebars/helpers/resources.rs
+++ b/crates/mdbook-html/src/html_handlebars/helpers/resources.rs
@@ -23,7 +23,7 @@ impl HelperDef for ResourceHelper {
     ) -> Result<(), RenderError> {
         let param = h.param(0).and_then(|v| v.value().as_str()).ok_or_else(|| {
             RenderErrorReason::Other(
-                "Param 0 with String type is required for theme_option helper.".to_owned(),
+                "Param 0 with String type is required for resource helper.".to_owned(),
             )
         })?;