diff --git a/backend/src/api/difficulty-adjustment.ts b/backend/src/api/difficulty-adjustment.ts
index 1f85fdb80..6d188266c 100644
--- a/backend/src/api/difficulty-adjustment.ts
+++ b/backend/src/api/difficulty-adjustment.ts
@@ -47,8 +47,8 @@ class DifficultyAdjustmentApi {
     }
 
     const timeAvg = timeAvgMins * 60 * 1000 ;
-    const remainingTime = (remainingBlocks * timeAvg) + (now * 1000);
-    const estimatedRetargetDate = remainingTime + now;
+    const remainingTime = remainingBlocks * timeAvg;
+    const estimatedRetargetDate = remainingTime + now * 1000;
 
     return {
       progressPercent,
diff --git a/contributors/junderw.txt b/contributors/junderw.txt
new file mode 100644
index 000000000..23f0e9a95
--- /dev/null
+++ b/contributors/junderw.txt
@@ -0,0 +1,3 @@
+I hereby accept the terms of the Contributor License Agreement in the CONTRIBUTING.md file of the mempool/mempool git repository as of August 19, 2022.
+
+Signed: junderw