diff --git a/absl/hash/internal/low_level_hash.cc b/absl/hash/internal/low_level_hash.cc
index 6f9cb9c7..d288f3ec 100644
--- a/absl/hash/internal/low_level_hash.cc
+++ b/absl/hash/internal/low_level_hash.cc
@@ -40,7 +40,7 @@ static uint64_t Mix(uint64_t v0, uint64_t v1) {
 }
 
 uint64_t LowLevelHash(const void* data, size_t len, uint64_t seed,
-                      const uint64_t salt[]) {
+                      const uint64_t salt[5]) {
   const uint8_t* ptr = static_cast<const uint8_t*>(data);
   uint64_t starting_length = static_cast<uint64_t>(len);
   uint64_t current_state = seed ^ salt[0];