diff --git a/src/librustc/middle/traits/fulfill.rs b/src/librustc/middle/traits/fulfill.rs
index 568286e39d5..c29b6f17a09 100644
--- a/src/librustc/middle/traits/fulfill.rs
+++ b/src/librustc/middle/traits/fulfill.rs
@@ -394,7 +394,7 @@ fn process_predicate<'a,'tcx>(selcx: &mut SelectionContext<'a,'tcx>,
         ty::Predicate::Projection(ref data) => {
             let project_obligation = obligation.with(data.clone());
             let result = project::poly_project_and_unify_type(selcx, &project_obligation);
-            debug!("poly_project_and_unify_type({}) = {}",
+            debug!("process_predicate: poly_project_and_unify_type({}) returned {}",
                    project_obligation.repr(tcx),
                    result.repr(tcx));
             match result {
diff --git a/src/librustc/middle/traits/project.rs b/src/librustc/middle/traits/project.rs
index 95a938328cf..90b56456d2f 100644
--- a/src/librustc/middle/traits/project.rs
+++ b/src/librustc/middle/traits/project.rs
@@ -65,7 +65,7 @@ pub fn poly_project_and_unify_type<'cx,'tcx>(
     obligation: &PolyProjectionObligation<'tcx>)
     -> Result<Option<Vec<PredicateObligation<'tcx>>>, MismatchedProjectionTypes<'tcx>>
 {
-    debug!("poly_project(obligation={})",
+    debug!("poly_project_and_unify_type(obligation={})",
            obligation.repr(selcx.tcx()));
 
     let infcx = selcx.infcx();
@@ -109,7 +109,7 @@ fn project_and_unify_type<'cx,'tcx>(
     obligation: &ProjectionObligation<'tcx>)
     -> Result<Option<Vec<PredicateObligation<'tcx>>>, MismatchedProjectionTypes<'tcx>>
 {
-    debug!("project_and_unify(obligation={})",
+    debug!("project_and_unify_type(obligation={})",
            obligation.repr(selcx.tcx()));
 
     let Normalized { value: normalized_ty, obligations } =