diff --git a/cpp-client/deephaven/dhclient/include/public/deephaven/client/utility/arrow_util.h b/cpp-client/deephaven/dhclient/include/public/deephaven/client/utility/arrow_util.h
index 2c42c5d43f7..7b77f0fef15 100644
--- a/cpp-client/deephaven/dhclient/include/public/deephaven/client/utility/arrow_util.h
+++ b/cpp-client/deephaven/dhclient/include/public/deephaven/client/utility/arrow_util.h
@@ -15,6 +15,13 @@
 namespace deephaven::client::utility {
 arrow::flight::FlightDescriptor ConvertTicketToFlightDescriptor(const std::string &ticket);
 
+/**
+ * If status is OK, do nothing. Otherwise throw a runtime error with an informative message.
+ * @param debug_info A DebugInfo object, typically as provided by DEEPHAVEN_LOCATION_EXPR.
+ * @param status the arrow::Status
+ */
+void OkOrThrow(const deephaven::dhcore::utility::DebugInfo &debug_info, const arrow::Status &status);
+
 /**
  * If result's status is OK, do nothing. Otherwise throw a runtime error with an informative message.
  * @param debug_info A DebugInfo object, typically as provided by DEEPHAVEN_LOCATION_EXPR.
@@ -25,13 +32,6 @@ void OkOrThrow(const deephaven::dhcore::utility::DebugInfo &debug_info, const ar
   OkOrThrow(debug_info, result.status());
 }
 
-/**
- * If status is OK, do nothing. Otherwise throw a runtime error with an informative message.
- * @param debug_info A DebugInfo object, typically as provided by DEEPHAVEN_LOCATION_EXPR.
- * @param status the arrow::Status
- */
-void OkOrThrow(const deephaven::dhcore::utility::DebugInfo &debug_info, const arrow::Status &status);
-
 /**
  * If result's internal status is OK, return result's contained value.
  * Otherwise throw a runtime error with an informative message.
diff --git a/cpp-client/deephaven/dhclient/src/utility/arrow_util.cc b/cpp-client/deephaven/dhclient/src/utility/arrow_util.cc
index e7c6ceeec30..70ed283164b 100644
--- a/cpp-client/deephaven/dhclient/src/utility/arrow_util.cc
+++ b/cpp-client/deephaven/dhclient/src/utility/arrow_util.cc
@@ -10,8 +10,6 @@
 #include <arrow/flight/types.h>
 #include "deephaven/dhcore/utility/utility.h"
 
-using namespace std;
-
 namespace deephaven::client::utility {
 void OkOrThrow(const deephaven::dhcore::utility::DebugInfo &debug_info,
     const arrow::Status &status) {