diff --git a/helpers/test-helper.js b/helpers/test-helper.js
index e8da629d79..8553b16e67 100644
--- a/helpers/test-helper.js
+++ b/helpers/test-helper.js
@@ -621,7 +621,7 @@ export async function advanceMiningCycleNoContest({ colonyNetwork, client, miner
   if (client !== undefined) {
     await client.addLogContentsToReputationTree();
     await client.submitRootHash();
-    await client.confirmEntry();
+    await client.confirmNewHash();
   } else {
     const accounts = await web3GetAccounts();
     minerAddress = minerAddress || accounts[5]; // eslint-disable-line no-param-reassign
diff --git a/packages/reputation-miner/ReputationMiner.js b/packages/reputation-miner/ReputationMiner.js
index 22ffca0331..f7fac9d851 100644
--- a/packages/reputation-miner/ReputationMiner.js
+++ b/packages/reputation-miner/ReputationMiner.js
@@ -1070,6 +1070,24 @@ class ReputationMiner {
     );
   }
 
+  /**
+   * Confirm the new reputation hash after all dispute resolution (if any) has occurred.
+   * @return {Promise} Resolves to tx hash of the response
+   */
+  async confirmNewHash() {
+    const repCycle = await this.getActiveRepCycle();
+    const [round] = await this.getMySubmissionRoundAndIndex();
+
+    let gasEstimate = ethers.BigNumber.from(4000000);
+    try {
+      gasEstimate = await repCycle.estimateGas.confirmNewHash(round);
+    } catch (err){ // eslint-disable-line no-empty
+
+    }
+    return repCycle.confirmNewHash(round, { gasLimit: gasEstimate, gasPrice: this.gasPrice });
+  }
+
+
   async updatePeriodLength(repCycle) {
     const { numerator, denominator } = await repCycle.getDecayConstant();
 
diff --git a/packages/reputation-miner/ReputationMinerClient.js b/packages/reputation-miner/ReputationMinerClient.js
index d77de49130..9ef7713184 100644
--- a/packages/reputation-miner/ReputationMinerClient.js
+++ b/packages/reputation-miner/ReputationMinerClient.js
@@ -612,16 +612,11 @@ class ReputationMinerClient {
   }
 
   async confirmEntry() {
-    const addr = await this._miner.colonyNetwork.getReputationMiningCycle(true);
-    const repCycle = new ethers.Contract(addr, this._miner.repCycleContractDef.abi, this._miner.realWallet);
-
     this._adapter.log("⏰ Looks like it's time to confirm the new hash");
-    // Confirm hash
+    // Confirm hash if possible
     const [round] = await this._miner.getMySubmissionRoundAndIndex();
     if (round && round.gte(0)) {
-      const gasEstimate = await repCycle.estimateGas.confirmNewHash(round);
-
-      const confirmNewHashTx = await repCycle.confirmNewHash(round, { gasLimit: gasEstimate, gasPrice: this._miner.gasPrice });
+      const confirmNewHashTx = await this._miner.confirmNewHash();
       this._adapter.log(`⛏️ Transaction waiting to be mined ${confirmNewHashTx.hash}`);
       await confirmNewHashTx.wait();
       this._adapter.log("✅ New reputation hash confirmed");
diff --git a/packages/reputation-miner/test/ReputationMinerTestWrapper.js b/packages/reputation-miner/test/ReputationMinerTestWrapper.js
index 1959a7196a..d9c4292c36 100644
--- a/packages/reputation-miner/test/ReputationMinerTestWrapper.js
+++ b/packages/reputation-miner/test/ReputationMinerTestWrapper.js
@@ -25,6 +25,11 @@ class ReputationMinerTestWrapper extends ReputationMiner {
     const tx = await super.respondToChallenge();
     return tx.wait();
   }
+
+  async confirmNewHash() {
+    const tx = await super.confirmNewHash();
+    return tx.wait();
+  }
 }
 
 export default ReputationMinerTestWrapper;
diff --git a/test/contracts-network/reputation-basic-functionality.js b/test/contracts-network/reputation-basic-functionality.js
index de053461d9..c0df314d4e 100644
--- a/test/contracts-network/reputation-basic-functionality.js
+++ b/test/contracts-network/reputation-basic-functionality.js
@@ -126,7 +126,22 @@ contract("Reputation mining - basic functionality", (accounts) => {
       const repCycle = await getActiveRepCycle(colonyNetwork);
       await forwardTime(MINING_CYCLE_DURATION, this);
 
-      await checkErrorRevert(repCycle.submitRootHash("0x12345678", 10, "0x00", 0), "colony-reputation-mining-zero-entry-index-passed");
+      await checkErrorRevert(repCycle.submitRootHash("0x12345678", 10, "0x00", 0), "colony-reputation-mining-no-stake-or-delegator");
+
+      const nUniqueSubmittedHashes = await repCycle.getNUniqueSubmittedHashes();
+      expect(nUniqueSubmittedHashes).to.be.zero;
+    });
+
+    it("should not allow someone to submit a new reputation hash with an entry index of 0, even if they're mining", async () => {
+      await giveUserCLNYTokensAndStake(colonyNetwork, MINER2, 9000);
+
+      const repCycle = await getActiveRepCycle(colonyNetwork);
+      await forwardTime(MINING_CYCLE_DURATION, this);
+
+      await checkErrorRevert(
+        repCycle.submitRootHash("0x12345678", 10, "0x00", 0, { from: MINER2 }),
+        "colony-reputation-mining-zero-entry-index-passed"
+      );
 
       const nUniqueSubmittedHashes = await repCycle.getNUniqueSubmittedHashes();
       expect(nUniqueSubmittedHashes).to.be.zero;