diff --git a/plugins/UM3NetworkPrinting/NetworkPrinterOutputDevice.py b/plugins/UM3NetworkPrinting/NetworkPrinterOutputDevice.py
index 61bc3ea89f..d25fc5d8c5 100644
--- a/plugins/UM3NetworkPrinting/NetworkPrinterOutputDevice.py
+++ b/plugins/UM3NetworkPrinting/NetworkPrinterOutputDevice.py
@@ -809,10 +809,10 @@ class NetworkPrinterOutputDevice(PrinterOutputDevice):
                     return  # Stop trying to zip, abort was called.
 
                 if self._use_gzip:
+                    batched_line += line
                     # if the gcode was read from a gcode file, self._gcode will be a list of all lines in that file.
                     # Compressing line by line in this case is extremely slow, so we need to batch them.
                     if len(batched_line) < max_chars_per_line:
-                        batched_line += line
                         continue
 
                     byte_array_file_data += _compress_data_and_notify_qt(batched_line)