diff --git a/hornbeam_interpreter/src/lib.rs b/hornbeam_interpreter/src/lib.rs
index 73890e1..094eb64 100644
--- a/hornbeam_interpreter/src/lib.rs
+++ b/hornbeam_interpreter/src/lib.rs
@@ -27,10 +27,10 @@ pub enum InterpreterError<LE: Debug + Clone, OE: Debug> {
     #[error("failed to write to output: {underlying:?}")]
     OutputError { underlying: OE },
 
-    #[error("failed to parse template: ")]
+    #[error("failed to parse template: {0}")]
     ParseError(#[from] ParseError),
 
-    #[error("failed to process parsed template: ")]
+    #[error("failed to process parsed template: {0}")]
     AstToIrError(#[from] AstToIrError),
 
     #[error("error finding templates to load: {0}")]