diff --git a/src/komodo_defs.h b/src/komodo_defs.h
index b65caff1c..a4d5a2df3 100644
--- a/src/komodo_defs.h
+++ b/src/komodo_defs.h
@@ -15,6 +15,6 @@
 #define KOMODO_SAPLING_DEADLINE 1550188800 // Feb 15th, 2019
 
 extern uint8_t ASSETCHAINS_TXPOW,ASSETCHAINS_PUBLIC;
-int32_t MAX_BLOCK_SIZE();
+int32_t MAX_BLOCK_SIZE(int32_t height);
 
 #endif