diff --git a/argparse.go b/argparse.go
index cb2cf28..c8c02ad 100644
--- a/argparse.go
+++ b/argparse.go
@@ -117,6 +117,9 @@ type Options struct {
 	positional bool
 }
 
+// Default argument options to use when user does not specify them.
+var DefaultArgOptions = Options{}
+
 // NewParser creates new Parser object that will allow to add arguments for parsing
 // It takes program name and description which will be used as part of Usage output
 // Returns pointer to Parser object
diff --git a/command.go b/command.go
index f87d411..27637b6 100644
--- a/command.go
+++ b/command.go
@@ -52,6 +52,12 @@ func (o *Command) addArg(a *arg) error {
 	}
 	a.parent = o
 
+	// Ensure Options pointer is not nil; use default options if none provided
+	if a.opts == nil {
+		opts := DefaultArgOptions
+		a.opts = &opts
+	}
+
 	if a.GetPositional() {
 		switch a.argType { // Secondary guard
 		case Flag, FlagCounter, StringList, IntList, FloatList, FileList: