1 files changed, 5 insertions, 2 deletions
diff --git a/src/makefile/inference_rules.rs b/src/makefile/inference_rules.rs
index 368d72b..f8bdd65 100644
--- a/src/makefile/inference_rules.rs
+++ b/src/makefile/inference_rules.rs
@@ -1,6 +1,6 @@
 use std::fmt;
 
-use eyre::{eyre, Result};
+use eyre::{eyre, OptionExt, Result};
 use regex::Captures;
 
 use super::command_line::CommandLine;
@@ -49,7 +49,10 @@ impl InferenceRule {
         let capture = self
             .first_match(target_name)?
             .ok_or_else(|| eyre!("asked non-matching inference rule for prerequisites"))?;
-        let percent_expansion = capture.get(1).expect("should've matched the %").as_str();
+        let percent_expansion = capture
+            .get(1)
+            .ok_or_eyre("should've matched the %")?
+            .as_str();
         Ok(self
             .prerequisites
             .iter()