diff --git a/bundle/config/root.go b/bundle/config/root.go
index 89c9b2233..c5e52ec2e 100644
--- a/bundle/config/root.go
+++ b/bundle/config/root.go
@@ -264,11 +264,12 @@ func (r *Root) InitializeVariables(vars []string) error {
 // Variables can have any type of value, including complex types
 func (r *Root) InitializeAnyTypeVariables(vars map[string]any) error {
 	for name, val := range vars {
-		if _, ok := r.Variables[name]; !ok {
+		variable, ok := r.Variables[name]
+		if !ok {
 			return fmt.Errorf("variable %s has not been defined", name)
 		}
 
-		err := r.Variables[name].Set(val)
+		err := variable.Set(val)
 		if err != nil {
 			return fmt.Errorf("failed to assign %s to %s: %s", val, name, err)
 		}