diff --git a/lib/Transforms/Scalar/SCCP.cpp b/lib/Transforms/Scalar/SCCP.cpp
index 3e935d8dc07..837ed9b7d15 100644
--- a/lib/Transforms/Scalar/SCCP.cpp
+++ b/lib/Transforms/Scalar/SCCP.cpp
@@ -1185,7 +1185,7 @@ void SCCPSolver::Solve() {
       DEBUG(dbgs() << "\nPopped off OI-WL: " << *I << '\n');
 
       // "I" got into the work list because it either made the transition from
-      // bottom to constant
+      // bottom to constant, or to overdefined.
       //
       // Anything on this worklist that is overdefined need not be visited
       // since all of its users will have already been marked as overdefined