diff --git a/scripts/extract_odm_strings.py b/scripts/extract_odm_strings.py
index afe2ee8c3..2d0e5232c 100644
--- a/scripts/extract_odm_strings.py
+++ b/scripts/extract_odm_strings.py
@@ -75,7 +75,7 @@ for opt in options:
     h = options[opt].get('help')
     if h:
         h = h.replace("\n", "")
-        h = h.replace('%(default)s', '``' + options[opt].get('default', '') + '``')
+        h = h.replace('%(default)s', ('``' + options[opt].get('default', '') + '``').replace('````', '``'))
         h = h.replace('%(choices)s', options[opt].get('choices', ''))
         options[opt]['help'] = h
     else:
diff --git a/source/arguments.rst b/source/arguments.rst
index 7df4219b0..8f8b5830b 100644
--- a/source/arguments.rst
+++ b/source/arguments.rst
@@ -13,7 +13,7 @@ Arguments
   Set a camera projection type. Manually setting a value can help improve geometric undistortion. By default the application tries to determine a lens type from the images metadata. Can be set to one of: ['auto', 'perspective', 'brown', 'fisheye', 'spherical']. Default: ``auto``
 
 ``--cameras`` <json>
-  Use the camera parameters computed from another dataset instead of calculating them. Can be specified either as path to a cameras.json file or as a JSON string representing the contents of a cameras.json file. Default: ````
+  Use the camera parameters computed from another dataset instead of calculating them. Can be specified either as path to a cameras.json file or as a JSON string representing the contents of a cameras.json file. Default: `"`
 
 ``--crop`` <positive float>
   Automatically crop image outputs by creating a smooth buffer around the dataset boundaries, shrinked by N meters. Use 0 to disable cropping. Default: ``3``