diff --git a/src/project_layout.rs b/src/project_layout.rs
index 278722904..a4e46416a 100644
--- a/src/project_layout.rs
+++ b/src/project_layout.rs
@@ -144,7 +144,16 @@ impl ProjectResolver {
             .unwrap_or_default()
             .to_vec();
         let py_root = match pyproject.and_then(|x| x.python_source()) {
-            Some(py_src) => project_root.join(py_src).normalize()?.into_path_buf(),
+            Some(py_src) => project_root
+                .join(py_src)
+                .normalize()
+                .with_context(|| {
+                    format!(
+                        "Failed to normalize python source path `{}`",
+                        py_src.display()
+                    )
+                })?
+                .into_path_buf(),
             None => match pyproject.and_then(|x| x.project_name()) {
                 Some(project_name) => {
                     // Detect src layout