diff --git a/ethcore/res/ethereum/constantinople_test.json b/ethcore/res/ethereum/constantinople_test.json
index 6169b743eff..40026a9a06b 100644
--- a/ethcore/res/ethereum/constantinople_test.json
+++ b/ethcore/res/ethereum/constantinople_test.json
@@ -6,7 +6,10 @@
 				"minimumDifficulty": "0x020000",
 				"difficultyBoundDivisor": "0x0800",
 				"durationLimit": "0x0d",
-				"blockReward": "0x1BC16D674EC80000",
+				"blockReward": {
+					"0": "0x29A2241AF62C0000",
+					"5": "0x1BC16D674EC80000"
+				},
 				"homesteadTransition": "0x0",
 				"eip100bTransition": "0x0",
 				"difficultyBombDelays": {