diff --git a/helpers/test_helpers.go b/helpers/test_helpers.go
index a9127a6fbd45..2341635eeea8 100644
--- a/helpers/test_helpers.go
+++ b/helpers/test_helpers.go
@@ -12,13 +12,16 @@ import (
 )
 
 // SimAppChainID hardcoded chainID for simulation
-const SimAppChainID = "simulation-app"
+const (
+	DefaultGenTxGas = 1000000
+	SimAppChainID   = "simulation-app"
+)
 
 // GenTx generates a signed mock transaction.
-func GenTx(msgs []sdk.Msg, feeAmt sdk.Coins, chainID string, accnums []uint64, seq []uint64, priv ...crypto.PrivKey) auth.StdTx {
+func GenTx(msgs []sdk.Msg, feeAmt sdk.Coins, gas uint64, chainID string, accnums []uint64, seq []uint64, priv ...crypto.PrivKey) auth.StdTx {
 	fee := auth.StdFee{
 		Amount: feeAmt,
-		Gas:    1000000, // TODO: this should be a param
+		Gas:    gas,
 	}
 
 	sigs := make([]auth.StdSignature, len(priv))
diff --git a/test_helpers.go b/test_helpers.go
index 306b4259fb2d..0e6d22150255 100644
--- a/test_helpers.go
+++ b/test_helpers.go
@@ -120,6 +120,7 @@ func SignCheckDeliver(
 	tx := helpers.GenTx(
 		msgs,
 		sdk.Coins{sdk.NewInt64Coin(sdk.DefaultBondDenom, 0)},
+		helpers.DefaultGenTxGas,
 		"",
 		accNums,
 		seq,
@@ -163,6 +164,7 @@ func GenSequenceOfTxs(msgs []sdk.Msg, accNums []uint64, initSeqNums []uint64, nu
 		txs[i] = helpers.GenTx(
 			msgs,
 			sdk.Coins{sdk.NewInt64Coin(sdk.DefaultBondDenom, 0)},
+			helpers.DefaultGenTxGas,
 			"",
 			accNums,
 			initSeqNums,