diff --git a/packages/common/src/constants.ts b/packages/common/src/constants.ts
index 361da31fe..f23d496d5 100644
--- a/packages/common/src/constants.ts
+++ b/packages/common/src/constants.ts
@@ -103,8 +103,8 @@ export const TIME_DELAY_BLOCKS = 10850;
 // The number of blocks after a time delay proxy call was announced that we want to cancel the tx. Should be 36 hours
 export const CANCEL_THRESHOLD = 21700;
 
-// Monitor Cron job for checking if clients have upgraded. This runs ever 15 minutes by default
-export const MONITOR_CRON = "0 */15 * * * *";
+// Monitor Cron job for checking if clients have upgraded. This runs ever 3 minutes by default
+export const MONITOR_CRON = "0 */3 * * * *";
 
 // Clear Offline Time Cron Job. This runs once every sunday  by default
 // export const CLEAR_OFFLINE_CRON = "0 0 0 * * 0";
diff --git a/packages/common/src/constraints/ScoreCandidates.ts b/packages/common/src/constraints/ScoreCandidates.ts
index 7cf9a2f69..e9216f1d0 100644
--- a/packages/common/src/constraints/ScoreCandidates.ts
+++ b/packages/common/src/constraints/ScoreCandidates.ts
@@ -210,7 +210,9 @@ export const scoreCandidate = async (
     const nominatorStakeScore =
       scaledNominatorStake * constraints.WEIGHT_CONFIG.NOMINATIONS_WEIGHT;
 
-    const isAlternativeClient = candidate?.implementation != "Parity Polkadot";
+    const isAlternativeClient = candidate?.implementation
+      ? candidate?.implementation != "Parity Polkadot"
+      : false;
     const clientScore = isAlternativeClient
       ? constraints.WEIGHT_CONFIG.CLIENT_WEIGHT
       : 0;
diff --git a/packages/common/src/constraints/ValidityChecks.ts b/packages/common/src/constraints/ValidityChecks.ts
index 95444bb5f..b66f8e112 100644
--- a/packages/common/src/constraints/ValidityChecks.ts
+++ b/packages/common/src/constraints/ValidityChecks.ts
@@ -89,7 +89,7 @@ export const checkLatestClientVersion = async (
 ): Promise<boolean> => {
   try {
     const skipClientUpgrade = config.constraints?.skipClientUpgrade || false;
-    if (skipClientUpgrade!) {
+    if (!skipClientUpgrade) {
       if (candidate?.implementation == "Kagome Node") {
         await setLatestClientReleaseValidity(candidate.stash, true);
         return true;
@@ -126,7 +126,6 @@ export const checkLatestClientVersion = async (
       await setLatestClientReleaseValidity(candidate.stash, true);
       return true;
     }
-    return true;
   } catch (e) {
     logger.error(
       `Error checking latest client version: ${e}`,