diff --git a/README.md b/README.md
index 91aded16..17ac4d25 100644
--- a/README.md
+++ b/README.md
@@ -5426,7 +5426,7 @@ They include support for:
   - _diff_cur_pcb_show: Makes a diff between the PCB in memory and the one on disk
   - _diff_cur_pcb_check: Computes the difference between PCB in memory and the one on disk. Aborts if more than
     100 pixels changed.
-  - Note: The *THRESHOLD* parameter can be used to adjust the number of changed pixels that we tolerate.
+  - Note: The *_KIBOT_CHKZONE_THRESHOLD* parameter can be used to adjust the number of changed pixels that we tolerate.
     Consult the [Definitions during import](#definitions-during-import) section to know about parameters.
 - [Elecrow](https://www.elecrow.com/): contain fabrication outputs compatible with Elecrow
   - _Elecrow_gerbers: Gerbers
diff --git a/docs/README.in b/docs/README.in
index e99ed35f..6b589c5a 100644
--- a/docs/README.in
+++ b/docs/README.in
@@ -1307,7 +1307,7 @@ They include support for:
   - _diff_cur_pcb_show: Makes a diff between the PCB in memory and the one on disk
   - _diff_cur_pcb_check: Computes the difference between PCB in memory and the one on disk. Aborts if more than
     100 pixels changed.
-  - Note: The *THRESHOLD* parameter can be used to adjust the number of changed pixels that we tolerate.
+  - Note: The *_KIBOT_CHKZONE_THRESHOLD* parameter can be used to adjust the number of changed pixels that we tolerate.
     Consult the [Definitions during import](#definitions-during-import) section to know about parameters.
 - [Elecrow](https://www.elecrow.com/): contain fabrication outputs compatible with Elecrow
   - _Elecrow_gerbers: Gerbers
diff --git a/kibot/resources/config_templates/CheckZoneFill.kibot.yaml b/kibot/resources/config_templates/CheckZoneFill.kibot.yaml
index 45afe8ca..4deee054 100644
--- a/kibot/resources/config_templates/CheckZoneFill.kibot.yaml
+++ b/kibot/resources/config_templates/CheckZoneFill.kibot.yaml
@@ -26,11 +26,11 @@ outputs:
     options:
       cache_dir: .cache
       diff_mode: stats
-      threshold: @THRESHOLD@
+      threshold: @_KIBOT_CHKZONE_THRESHOLD@
       old: ''
       old_type: file
       new_type: current
 
 ...
 definitions:
-  THRESHOLD: 100
+  _KIBOT_CHKZONE_THRESHOLD: 100