diff --git a/src/cli/inputParserForCreateModel.m b/src/cli/inputParserForCreateModel.m
index c8d375f5..0b9bb12b 100644
--- a/src/cli/inputParserForCreateModel.m
+++ b/src/cli/inputParserForCreateModel.m
@@ -7,6 +7,7 @@
   % (C) Copyright 2023 bidspm developers
   args = baseInputParser();
 
+  isLogical = @(x) islogical(x) && numel(x) == 1;
   isEmptyOrCellstr = @(x) isempty(x) || iscellstr(x);  %#ok<*ISCLSTR>
   isCellStr = @(x) iscellstr(x);