diff --git a/deps/uthash/uthash.h b/deps/uthash/uthash.h
index 68693bf..9572e48 100644
--- a/deps/uthash/uthash.h
+++ b/deps/uthash/uthash.h
@@ -129,7 +129,9 @@ do {
 #endif
 
 /* initial number of buckets */
+#ifndef HASH_INITIAL_NUM_BUCKETS
 #define HASH_INITIAL_NUM_BUCKETS 32U     /* initial number of buckets        */
+#endif
 #define HASH_INITIAL_NUM_BUCKETS_LOG2 5U /* lg2 of initial number of buckets */
 #define HASH_BKT_CAPACITY_THRESH 10U     /* expand when bucket count reaches */
 
diff --git a/src/session/session_table.cpp b/src/session/session_table.cpp
index 1d40421..e396996 100644
--- a/src/session/session_table.cpp
+++ b/src/session/session_table.cpp
@@ -1,5 +1,6 @@
 #include <assert.h>
 
+#define HASH_INITIAL_NUM_BUCKETS 32768U // initial number of buckets
 #define HASH_FUNCTION(keyptr, keylen, hashv) HASH_FUNCTION_OVERWRITE(keyptr, keylen, &hashv)
 #define HASH_KEYCMP(a, b, len) HASH_KEYCMP_OVERWRITE(a, b, len)
 #include "session_def.h"