diff --git a/eth/rpc/rpcapi/eth_api_test.go b/eth/rpc/rpcapi/eth_api_test.go
index 2761c0f55..055cdecfe 100644
--- a/eth/rpc/rpcapi/eth_api_test.go
+++ b/eth/rpc/rpcapi/eth_api_test.go
@@ -108,7 +108,7 @@ func (s *NodeSuite) Test_BlockNumber() {
 	s.NoError(err)
 	// It might be off by 1 block in either direction.
 	blockDiff := networkBlockNumber - int64(ethBlockNumber)
-	s.LessOrEqualf(blockDiff, 2, "networkBlockNumber %d, ethBlockNumber %d",
+	s.Truef(blockDiff <= 2, "networkBlockNumber %d, ethBlockNumber %d",
 		networkBlockNumber, ethBlockNumber,
 	)
 }