diff --git a/mlir/lib/Transforms/Utils/DialectConversion.cpp b/mlir/lib/Transforms/Utils/DialectConversion.cpp
index 255b0ba2559e..2b006430d381 100644
--- a/mlir/lib/Transforms/Utils/DialectConversion.cpp
+++ b/mlir/lib/Transforms/Utils/DialectConversion.cpp
@@ -1214,7 +1214,7 @@ LogicalResult ConversionPatternRewriterImpl::remapValues(
       ValueRange targetMat = buildUnresolvedMaterialization(
           MaterializationKind::Target, computeInsertPoint(repl), operandLoc,
           /*valueToMap=*/Value(), /*inputs=*/unpacked,
-          /*outputType=*/legalTypes, /*originalType=*/origType,
+          /*outputTypes=*/legalTypes, /*originalType=*/origType,
           currentTypeConverter);
       remapped.push_back(targetMat);
       continue;