diff --git a/compiler/lib/Conversion/HLFHETensorOpsToLinalg/TensorOpsToLinalg.cpp b/compiler/lib/Conversion/HLFHETensorOpsToLinalg/TensorOpsToLinalg.cpp
index 40b37345d..0fb1d8433 100644
--- a/compiler/lib/Conversion/HLFHETensorOpsToLinalg/TensorOpsToLinalg.cpp
+++ b/compiler/lib/Conversion/HLFHETensorOpsToLinalg/TensorOpsToLinalg.cpp
@@ -162,7 +162,7 @@ getBroadcastedAffineMapMultiLUT(const mlir::RankedTensorType &resultType,
   affineExprs.reserve(operandShape.size());
   // Don't take the lut dimension into account
   size_t deltaNumDim = resultShape.size() - operandShape.size() + 1;
-  for (auto i = 0; i < operandShape.size() - 1; i++) {
+  for (size_t i = 0; i < operandShape.size() - 1; i++) {
     if (operandShape[i] == 1 && resultShape[i + deltaNumDim] != 1) {
       affineExprs.push_back(rewriter.getAffineConstantExpr(0));
     } else {