diff --git a/include/hash.h b/include/hash.h
index 01f0d74c..a28a8d4c 100644
--- a/include/hash.h
+++ b/include/hash.h
@@ -45,6 +45,9 @@ extern struct Dictionary *nd_dict;
 #define U_MAX_BITS 17
 #define U_MAX 131072 /* 2^17 */
 
+/* Client fd hash table size, used in hash.c */
+#define CLI_FD_MAX 4096
+
 /* Channel hash table size, hash.c/s_debug.c */
 #define CH_MAX_BITS 16
 #define CH_MAX 65536 /* 2^16 */