1 files changed, 3 insertions, 0 deletions
diff --git a/src/doc.rs b/src/doc.rs
index 9989bc4..5c81e27 100644
--- a/src/doc.rs
+++ b/src/doc.rs
@@ -559,6 +559,9 @@ pub fn codegen(filename: &Path, output: &Path, template: Option<&str>) -> Result
         .unwrap_or_else(|| doc.template())?
         .to_string();
     event!(Level::TRACE, ?template);
+    if !doc.meta().templates().any(|t| t == template) {
+        return Err(SubplotError::TemplateSupportNotPresent);
+    }
     if !doc.check_named_files_exist(&template)?
         || !doc.check_matched_steps_have_impl(&template)
         || !doc.check_embedded_files_are_used(&template)?