diff --git a/src/librustc/dep_graph/dep_node.rs b/src/librustc/dep_graph/dep_node.rs
index d19bef6babea..0c941a4a2301 100644
--- a/src/librustc/dep_graph/dep_node.rs
+++ b/src/librustc/dep_graph/dep_node.rs
@@ -42,7 +42,8 @@ pub enum DepNode<D: Clone + Debug> {
     // Represents the HIR node with the given node-id
     Hir(D),
 
-    // Represents the body of a function or method
+    // Represents the body of a function or method. The def-id is that of the
+    // function/method.
     HirBody(D),
 
     // Represents the metadata for a given HIR node, typically found
diff --git a/src/test/incremental/source_loc_macros.rs b/src/test/incremental/source_loc_macros.rs
index e81f690f5cac..36d1b3ecbcd1 100644
--- a/src/test/incremental/source_loc_macros.rs
+++ b/src/test/incremental/source_loc_macros.rs
@@ -17,16 +17,19 @@
 
 #![feature(rustc_attrs)]
 
+#[rustc_clean(label="Hir", cfg="rpass2")]
 #[rustc_clean(label="HirBody", cfg="rpass2")]
 fn line_same() {
     let _ = line!();
 }
 
+#[rustc_clean(label="Hir", cfg="rpass2")]
 #[rustc_clean(label="HirBody", cfg="rpass2")]
 fn col_same() {
     let _ = column!();
 }
 
+#[rustc_clean(label="Hir", cfg="rpass2")]
 #[rustc_clean(label="HirBody", cfg="rpass2")]
 fn file_same() {
     let _ = file!();
@@ -38,6 +41,7 @@ fn line_different() {
 }
 
 #[cfg(rpass2)]
+#[rustc_clean(label="Hir", cfg="rpass2")]
 #[rustc_dirty(label="HirBody", cfg="rpass2")]
 fn line_different() {
     let _ = line!();
@@ -49,6 +53,7 @@ fn col_different() {
 }
 
 #[cfg(rpass2)]
+#[rustc_clean(label="Hir", cfg="rpass2")]
 #[rustc_dirty(label="HirBody", cfg="rpass2")]
 fn col_different() {
     let _ =        column!();