2 files changed, 13 insertions, 4 deletions
diff --git a/app/scripts/controllers/transactions.js b/app/scripts/controllers/transactions.js
index 469deb670..ded9739a8 100644
--- a/app/scripts/controllers/transactions.js
+++ b/app/scripts/controllers/transactions.js
@@ -180,8 +180,10 @@ module.exports = class TransactionController extends EventEmitter {
     // ensure value
     txMeta.gasPriceSpecified = Boolean(txParams.gasPrice)
     txMeta.nonceSpecified = Boolean(txParams.nonce)
-    const gasPrice = txParams.gasPrice || this.getGasPrice ? this.getGasPrice()
-      : await this.query.gasPrice()
+    let gasPrice = txParams.gasPrice
+    if (!gasPrice) {
+      gasPrice = this.getGasPrice ? this.getGasPrice() : await this.query.gasPrice()
+    }
     txParams.gasPrice = ethUtil.addHexPrefix(gasPrice.toString(16))
     txParams.value = txParams.value || '0x0'
     // set gasLimit
diff --git a/app/scripts/metamask-controller.js b/app/scripts/metamask-controller.js
index 66738db51..f62b5e5cd 100644
--- a/app/scripts/metamask-controller.js
+++ b/app/scripts/metamask-controller.js
@@ -490,9 +490,15 @@ module.exports = class MetamaskController extends EventEmitter {
   getGasPrice () {
     const { recentBlocksController } = this
     const { recentBlocks } = recentBlocksController.store.getState()
+
+    // Return 1 gwei if no blocks have been observed:
+    if (recentBlocks.length === 0) {
+      return '0x' + GWEI_BN.toString(16)
+    }
+
     const lowestPrices = recentBlocks.map((block) => {
-      if (!block.gasPrices) {
-        return new BN(0)
+      if (!block.gasPrices || block.gasPrices.length < 1) {
+        return GWEI_BN
       }
       return block.gasPrices
       .map(hexPrefix => hexPrefix.substr(2))
@@ -502,6 +508,7 @@ module.exports = class MetamaskController extends EventEmitter {
       })[0]
     })
     .map(number => number.div(GWEI_BN).toNumber())
+
     const percentileNum = percentile(50, lowestPrices)
     const percentileNumBn = new BN(percentileNum)
     return '0x' + percentileNumBn.mul(GWEI_BN).toString(16)