diff --git a/llvm/include/llvm/Transforms/Vectorize/SLPVectorizer.h b/llvm/include/llvm/Transforms/Vectorize/SLPVectorizer.h
index 737bb8525051a..326006fbb8803 100644
--- a/llvm/include/llvm/Transforms/Vectorize/SLPVectorizer.h
+++ b/llvm/include/llvm/Transforms/Vectorize/SLPVectorizer.h
@@ -29,7 +29,6 @@ namespace llvm {
 class AAResults;
 class AssumptionCache;
 class BasicBlock;
-class CmpInst;
 class DemandedBits;
 class DominatorTree;
 class Function;