diff --git a/libraries/chain/include/graphene/chain/config.hpp b/libraries/chain/include/graphene/chain/config.hpp
index aaa40b18..188d5018 100644
--- a/libraries/chain/include/graphene/chain/config.hpp
+++ b/libraries/chain/include/graphene/chain/config.hpp
@@ -49,7 +49,7 @@
 
 #define GRAPHENE_MIN_BLOCK_SIZE_LIMIT (GRAPHENE_MIN_TRANSACTION_SIZE_LIMIT*5) // 5 transactions per block
 #define GRAPHENE_MIN_TRANSACTION_EXPIRATION_LIMIT (GRAPHENE_MAX_BLOCK_INTERVAL * 5) // 5 transactions per block
-#define GRAPHENE_BLOCKCHAIN_PRECISION                           100000
+#define GRAPHENE_BLOCKCHAIN_PRECISION                           uint64_t( 100000 )
 #define GRAPHENE_BLOCKCHAIN_PRECISION_DIGITS                    5
 #define GRAPHENE_DEFAULT_TRANSFER_FEE                           (1*GRAPHENE_BLOCKCHAIN_PRECISION)
 #define GRAPHENE_MAX_INSTANCE_ID                                (uint64_t(-1)>>16)