diff --git a/llvm/lib/CodeGen/MachinePipeliner.cpp b/llvm/lib/CodeGen/MachinePipeliner.cpp
index 90a54e4..fab4451 100644
--- a/llvm/lib/CodeGen/MachinePipeliner.cpp
+++ b/llvm/lib/CodeGen/MachinePipeliner.cpp
@@ -1583,7 +1583,7 @@
   }
 }
 
-/// Add the node to the set, and add all is its connected nodes to the set.
+/// Add the node to the set, and add all of its connected nodes to the set.
 void SwingSchedulerDAG::addConnectedNodes(SUnit *SU, NodeSet &NewSet,
                                           SetVector<SUnit *> &NodesAdded) {
   NewSet.insert(SU);