diff --git a/rustpad-server/src/rustpad.rs b/rustpad-server/src/rustpad.rs
index dfede38..2054fc0 100644
--- a/rustpad-server/src/rustpad.rs
+++ b/rustpad-server/src/rustpad.rs
@@ -316,9 +316,9 @@ impl Rustpad {
         for history_op in &state.operations[revision..] {
             operation = operation.transform(&history_op.operation)?.0;
         }
-        if operation.target_len() > 100000 {
+        if operation.target_len() > 256 * 1024 {
             bail!(
-                "target length {} is greater than 100 KB maximum",
+                "target length {} is greater than 256 KiB maximum",
                 operation.target_len()
             );
         }