diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index b987863127994..adf547d74f5b0 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -2325,8 +2325,8 @@ emitTransformedIndex(IRBuilderBase &B, Value *Index, Value *StartValue,
   llvm_unreachable("invalid enum");
 }
 
-std::optional<unsigned> getMaxVScale(const Function &F,
-                                     const TargetTransformInfo &TTI) {
+static std::optional<unsigned> getMaxVScale(const Function &F,
+                                            const TargetTransformInfo &TTI) {
   if (std::optional<unsigned> MaxVScale = TTI.getMaxVScale())
     return MaxVScale;