diff --git a/velox/core/Expressions.cpp b/velox/core/Expressions.cpp
index 1a44ff43ecb6..e0eefe0d4af3 100644
--- a/velox/core/Expressions.cpp
+++ b/velox/core/Expressions.cpp
@@ -83,9 +83,7 @@ folly::dynamic ConstantTypedExpr::serialize() const {
   if (valueVector_) {
     std::ostringstream out;
     saveVector(*valueVector_, out);
-    auto serializedValue = out.str();
-    obj["valueVector"] = encoding::Base64::encode(
-        serializedValue.data(), serializedValue.size());
+    obj["valueVector"] = encoding::Base64::encode(std::string_view(out.str()));
   } else {
     obj["value"] = value_.serialize();
   }
@@ -105,7 +103,7 @@ TypedExprPtr ConstantTypedExpr::create(
   }
 
   auto encodedData = obj["valueVector"].asString();
-  auto serializedData = encoding::Base64::decode(encodedData);
+  auto serializedData = encoding::Base64::decode(std::string_view(encodedData));
   std::istringstream dataStream(serializedData);
 
   auto* pool = static_cast<memory::MemoryPool*>(context);
diff --git a/velox/exec/fuzzer/PrestoQueryRunner.cpp b/velox/exec/fuzzer/PrestoQueryRunner.cpp
index 4aa20ca8c4a9..141bd0dbefbf 100644
--- a/velox/exec/fuzzer/PrestoQueryRunner.cpp
+++ b/velox/exec/fuzzer/PrestoQueryRunner.cpp
@@ -129,10 +129,10 @@ class ServerResponse {
     // contains base64-encoded PrestoPage of results.
 
     std::vector<RowVectorPtr> vectors;
-    for (auto& encodedData : response_["binaryData"]) {
-      const std::string data =
-          encoding::Base64::decode(encodedData.stringPiece());
-      vectors.push_back(deserialize(rowType, data, pool));
+    for (const auto& encodedData : response_["binaryData"]) {
+      const std::string decodedData =
+          encoding::Base64::decode(std::string_view(encodedData.stringPiece()));
+      vectors.push_back(deserialize(rowType, decodedData, pool));
     }
     return vectors;
   }