diff --git a/src/main/java/org/qortal/arbitrary/ArbitraryDataFile.java b/src/main/java/org/qortal/arbitrary/ArbitraryDataFile.java
index 575f103b..4c806648 100644
--- a/src/main/java/org/qortal/arbitrary/ArbitraryDataFile.java
+++ b/src/main/java/org/qortal/arbitrary/ArbitraryDataFile.java
@@ -53,6 +53,7 @@ public class ArbitraryDataFile {
     private static final Logger LOGGER = LogManager.getLogger(ArbitraryDataFile.class);
 
     public static final long MAX_FILE_SIZE = 500 * 1024 * 1024; // 500MiB
+    protected static final int MAX_CHUNK_SIZE = 1 * 1024 * 1024; // 1MiB
     public static final int CHUNK_SIZE = 1 * 1024 * 1024; // 1MiB
     public static int SHORT_DIGEST_LENGTH = 8;
 
diff --git a/src/main/java/org/qortal/arbitrary/ArbitraryDataFileChunk.java b/src/main/java/org/qortal/arbitrary/ArbitraryDataFileChunk.java
index b113fbba..5f6695df 100644
--- a/src/main/java/org/qortal/arbitrary/ArbitraryDataFileChunk.java
+++ b/src/main/java/org/qortal/arbitrary/ArbitraryDataFileChunk.java
@@ -40,8 +40,8 @@ public class ArbitraryDataFileChunk extends ArbitraryDataFile {
         try {
             // Validate the file size (chunks have stricter limits)
             long fileSize = Files.size(this.filePath);
-            if (fileSize > CHUNK_SIZE) {
-                LOGGER.error(String.format("DataFileChunk is too large: %d bytes (max chunk size: %d bytes)", fileSize, CHUNK_SIZE));
+            if (fileSize > MAX_CHUNK_SIZE) {
+                LOGGER.error(String.format("DataFileChunk is too large: %d bytes (max chunk size: %d bytes)", fileSize, MAX_CHUNK_SIZE));
                 return ValidationResult.FILE_TOO_LARGE;
             }