diff --git a/src/bin/pgbench/pgbench.c b/src/bin/pgbench/pgbench.c
index 894571e..5e88192 100644
--- a/src/bin/pgbench/pgbench.c
+++ b/src/bin/pgbench/pgbench.c
@@ -64,9 +64,9 @@
 /*
  * Hashing constants
  */
-#define FNV_PRIME 0x100000001b3
-#define FNV_OFFSET_BASIS 0xcbf29ce484222325
-#define MM2_MUL 0xc6a4a7935bd1e995
+#define FNV_PRIME INT64CONST(0x100000001b3)
+#define FNV_OFFSET_BASIS INT64CONST(0xcbf29ce484222325)
+#define MM2_MUL INT64CONST(0xc6a4a7935bd1e995)
 #define MM2_ROT 47
 
 /*