diff --git a/src/lib/salad/guava.c b/src/lib/salad/guava.c
index 84fc5cbfa2f91e7a6a1219513ca7af6f5c2e4d59..86081b206e42b91bce40c2b486492989d4a3436f 100644
--- a/src/lib/salad/guava.c
+++ b/src/lib/salad/guava.c
@@ -31,6 +31,12 @@
 
 #include <stdint.h>
 
+/**
+ * This is implements a consistent hashing algorithm
+ * A Fast, Minimal Memory, Consistent Hash Algorithm
+ * John Lamping, Eric Veach
+ */
+
 static const int64_t K = 2862933555777941757;
 static const double  D = 0x1.0p31;