diff --git a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
index da8e0d8cc09a8..d3b17201b8706 100644
--- a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
+++ b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
@@ -2222,7 +2222,7 @@ class BoUpSLP {
       MapVector<unsigned, std::pair<unsigned, unsigned>> HashMap;
       // Try to be closer to the original results, if we have multiple lanes
       // with same cost. If 2 lanes have the same cost, use the one with the
-      // lowest index.
+      // highest index.
       for (int I = getNumLanes(); I > 0; --I) {
         unsigned Lane = I - 1;
         OperandsOrderData NumFreeOpsHash =