diff --git a/src/utils/version_helper.py b/src/utils/version_helper.py
index da78e3f6..0219a2bc 100644
--- a/src/utils/version_helper.py
+++ b/src/utils/version_helper.py
@@ -29,7 +29,7 @@ def validate_version(version: str) -> None:
                 '- "ProjectName-" is an optional prefix (any sequence of letters followed by a dash).\n'
                 '- "Major.Minor.Patch" is the version number (three numbers separated by dots).\n'
                 '- "-Mx" is an optional suffix (a dash followed by "M" and a number).\n'
-                '- "[.+]" is a separator, either a dot or a plus sign.\n'
+                '- "[.-+]" is a separator, either a dot, a minus or a plus sign.\n'
                 '- "BuildNumber" is the build number (a number at the end of the string).'
             )