diff --git a/plugins/PostProcessingPlugin/scripts/PauseAtHeight.py b/plugins/PostProcessingPlugin/scripts/PauseAtHeight.py
index 3a25b7781a..499214a0e9 100644
--- a/plugins/PostProcessingPlugin/scripts/PauseAtHeight.py
+++ b/plugins/PostProcessingPlugin/scripts/PauseAtHeight.py
@@ -162,6 +162,8 @@ class PauseAtHeight(Script):
         # use offset to calculate the current height: <current_height> = <current_z> - <layer_0_z>
         layer_0_z = 0
         current_z = 0
+        current_height = 0
+        current_layer = 0
         current_extrusion_f = 0
         got_first_g_cmd_on_layer_0 = False
         current_t = 0 #Tracks the current extruder for tracking the target temperature.
@@ -263,8 +265,8 @@ class PauseAtHeight(Script):
                         # the nozzle)
                         x, y = self.getNextXY(layer)
                         prev_lines = prev_layer.split("\n")
-                        for line in prev_lines:
-                            new_e = self.getValue(line, 'E', current_e)
+                        for lin in prev_lines:
+                            new_e = self.getValue(lin, "E", current_e)
                             if new_e != current_e:
                                 current_e = new_e
                                 break
diff --git a/plugins/USBPrinting/USBPrinterOutputDevice.py b/plugins/USBPrinting/USBPrinterOutputDevice.py
index e32e4c8745..4930835f58 100644
--- a/plugins/USBPrinting/USBPrinterOutputDevice.py
+++ b/plugins/USBPrinting/USBPrinterOutputDevice.py
@@ -328,7 +328,7 @@ class USBPrinterOutputDevice(PrinterOutputDevice):
 
     def _setFirmwareName(self, name):
         new_name = re.findall(r"FIRMWARE_NAME:(.*);", str(name))
-        if  new_name:
+        if new_name:
             self._firmware_name = new_name[0]
             Logger.log("i", "USB output device Firmware name: %s", self._firmware_name)
         else: