diff --git a/src/Laracasts/Commander/CommanderTrait.php b/src/Laracasts/Commander/CommanderTrait.php
index 70afbfe..ce27a99 100644
--- a/src/Laracasts/Commander/CommanderTrait.php
+++ b/src/Laracasts/Commander/CommanderTrait.php
@@ -3,6 +3,7 @@
 use ReflectionClass;
 use InvalidArgumentException;
 use Input, App;
+use Illuminate\Support\Str;
 
 trait CommanderTrait {
 
@@ -66,6 +67,10 @@ protected function mapInputToCommand($command, array $input)
             {
                 $dependencies[] = $input[$name];
             }
+            elseif (array_key_exists(Str::snake($name), $input))
+            {
+                $dependencies[] = $input[Str::snake($name)];
+            }
             elseif ($parameter->isDefaultValueAvailable())
             {
                 $dependencies[] = $parameter->getDefaultValue();