diff --git a/pkg/ingester/client/fnv.go b/pkg/ingester/client/fnv.go
index f151186f0e3..c4150859506 100644
--- a/pkg/ingester/client/fnv.go
+++ b/pkg/ingester/client/fnv.go
@@ -29,6 +29,7 @@ func hashNew() uint64 {
 }
 
 // hashAdd adds a string to a fnv64a hash value, returning the updated hash.
+// Note this is the same algorithm as Go stdlib `sum64a.Write()`
 func hashAdd(h uint64, s string) uint64 {
 	for i := 0; i < len(s); i++ {
 		h ^= uint64(s[i])
@@ -44,16 +45,17 @@ func hashAddByte(h uint64, b byte) uint64 {
 	return h
 }
 
-// HashNew32 initializies a new fnv64a hash value.
+// HashNew32 initializies a new fnv32 hash value.
 func HashNew32() uint32 {
 	return offset32
 }
 
-// HashAdd32 adds a string to a fnv64a hash value, returning the updated hash.
+// HashAdd32 adds a string to a fnv32 hash value, returning the updated hash.
+// Note this is the same algorithm as Go stdlib `sum32.Write()`
 func HashAdd32(h uint32, s string) uint32 {
 	for i := 0; i < len(s); i++ {
-		h ^= uint32(s[i])
 		h *= prime32
+		h ^= uint32(s[i])
 	}
 	return h
 }