diff --git a/cpp/src/io/orc/dict_enc.cu b/cpp/src/io/orc/dict_enc.cu
index e1ea3ab01e1..5695e882a95 100644
--- a/cpp/src/io/orc/dict_enc.cu
+++ b/cpp/src/io/orc/dict_enc.cu
@@ -49,7 +49,7 @@ struct dictinit_state_s {
 /**
  * @brief Return a 12-bit hash from a string
  */
-static inline __device__ uint32_t hash_string(const string_view &val)
+static inline __device__ uint32_t hash_string(const string_view val)
 {
   if (val.empty()) {
     return 0;