diff --git a/src/lib/parameters/px4params/srcparser.py b/src/lib/parameters/px4params/srcparser.py
index b601b90b23..7fadf9f7c3 100644
--- a/src/lib/parameters/px4params/srcparser.py
+++ b/src/lib/parameters/px4params/srcparser.py
@@ -307,6 +307,8 @@ class SourceParser(object):
                         if short_desc is not None:
                             if '\n' in short_desc:
                                 raise Exception('short description must be a single line (parameter: {:})'.format(name))
+                            if len(short_desc) > 150:
+                                raise Exception('short description too long (150 max, is {:}, parameter: {:})'.format(len(short_desc), name))
                             param.SetField("short_desc", self.re_remove_dots.sub('', short_desc))
                         if long_desc is not None:
                             long_desc = self.re_remove_carriage_return.sub(' ', long_desc)
diff --git a/validation/module_schema.yaml b/validation/module_schema.yaml
index cf954e401a..591af3853c 100644
--- a/validation/module_schema.yaml
+++ b/validation/module_schema.yaml
@@ -111,6 +111,8 @@ parameters:
                                     # Short description (one line)
                                     type: string
                                     required: true
+                                    maxlength: 70
+                                    regex: '[^\n]+'
                                 long:
                                     # Long description (can be multiple lines)
                                     type: string