diff --git a/backend/src/api/common.ts b/backend/src/api/common.ts
index 45c7ffe40..e1021c234 100644
--- a/backend/src/api/common.ts
+++ b/backend/src/api/common.ts
@@ -13,9 +13,13 @@ export class Common {
   }
 
   static percentile(numbers: number[], percentile: number) {
-    if (percentile === 50) return this.median(numbers);
+    if (percentile === 50) {
+      return this.median(numbers);
+    }
     const index = Math.ceil(numbers.length * (100 - percentile) * 1e-2);
-    if (index < 0 || index > numbers.length - 1) return 0;
+    if (index < 0 || index > numbers.length - 1) {
+      return 0;
+    }
     return numbers[index];
   }
 
@@ -71,7 +75,7 @@ export class Common {
        }, ms);
     });
   }
-  
+
   static shuffleArray(array: any[]) {
     for (let i = array.length - 1; i > 0; i--) {
         const j = Math.floor(Math.random() * (i + 1));
@@ -81,7 +85,7 @@ export class Common {
 
   static setRelativesAndGetCpfpInfo(tx: TransactionExtended, memPool: { [txid: string]: TransactionExtended }): CpfpInfo {
     const parents = this.findAllParents(tx, memPool);
-    const lowerFeeParents = parents.filter((parent) => parent.feePerVsize < tx.feePerVsize);
+    const lowerFeeParents = parents.filter((parent) => parent.feePerVsize < tx.effectiveFeePerVsize);
 
     let totalWeight = tx.weight + lowerFeeParents.reduce((prev, val) => prev + val.weight, 0);
     let totalFees = tx.fee + lowerFeeParents.reduce((prev, val) => prev + val.fee, 0);
diff --git a/backend/src/api/mempool-blocks.ts b/backend/src/api/mempool-blocks.ts
index c52c458e9..a9c91103d 100644
--- a/backend/src/api/mempool-blocks.ts
+++ b/backend/src/api/mempool-blocks.ts
@@ -53,7 +53,7 @@ class MempoolBlocks {
     // Pass down size + fee to all unconfirmed children
     let sizes = 0;
     memPoolArray.forEach((tx, i) => {
-      sizes += tx.weight
+      sizes += tx.weight;
       if (sizes > 4000000 * 8) {
         return;
       }