diff --git a/src/main/java/org/qortal/controller/OnlineAccountsManager.java b/src/main/java/org/qortal/controller/OnlineAccountsManager.java
index a2a359fa..cfe57264 100644
--- a/src/main/java/org/qortal/controller/OnlineAccountsManager.java
+++ b/src/main/java/org/qortal/controller/OnlineAccountsManager.java
@@ -28,6 +28,8 @@ import java.util.*;
 import java.util.concurrent.TimeoutException;
 import java.util.stream.Collectors;
 
+import static org.qortal.transform.Transformer.REDUCED_SIGNATURE_LENGTH;
+
 public class OnlineAccountsManager extends Thread {
 
     private class OurOnlineAccountsThread extends Thread {
@@ -415,7 +417,7 @@ public class OnlineAccountsManager extends Thread {
                     LOGGER.info("Unable to compute online accounts without having a recent block");
                     return false;
                 }
-                byte[] reducedRecentBlockSignature = Arrays.copyOfRange(recentBlockData.getSignature(), 0, 8);
+                byte[] reducedRecentBlockSignature = Arrays.copyOfRange(recentBlockData.getSignature(), 0, REDUCED_SIGNATURE_LENGTH);
 
                 byte[] mempowBytes;
                 try {
diff --git a/src/main/java/org/qortal/transform/Transformer.java b/src/main/java/org/qortal/transform/Transformer.java
index 3f2a44d3..f84327cd 100644
--- a/src/main/java/org/qortal/transform/Transformer.java
+++ b/src/main/java/org/qortal/transform/Transformer.java
@@ -18,7 +18,7 @@ public abstract class Transformer {
 	public static final int SIGNATURE_LENGTH = 64;
 	public static final int TIMESTAMP_LENGTH = LONG_LENGTH;
 
-	public static final int REDUCED_SIGNATURE_LENGTH = 8;
+	public static final int REDUCED_SIGNATURE_LENGTH = 4;
 
 	public static final int MD5_LENGTH = 16;
 	public static final int SHA256_LENGTH = 32;