diff --git a/php/EE_CLI/Configurator.php b/php/EE_CLI/Configurator.php
index d1a28b23..a4f7b3fa 100644
--- a/php/EE_CLI/Configurator.php
+++ b/php/EE_CLI/Configurator.php
@@ -169,6 +169,19 @@ class Configurator {
 		}
 	}
 
+	/**
+	 * Check if stack exists in YAML file.
+	 *
+	 * @param string $yml_file Path to the YAML file
+	 * @return boolean if stack exists
+	**/
+	public function check_stack_exists($path, $stack){
+		if (array_key_exists($stack, self::load_yml( $path ))){
+			return true;
+		}
+		return false;
+	}
+
 	/**
 	 * Load values from a YAML file.
 	 *
@@ -220,4 +233,5 @@ class Configurator {
 		}
 	}
 
+
 }
diff --git a/php/EE_CLI/Runner.php b/php/EE_CLI/Runner.php
index 428ebe1b..e60a4509 100644
--- a/php/EE_CLI/Runner.php
+++ b/php/EE_CLI/Runner.php
@@ -259,8 +259,9 @@ class Runner {
 	/*
 		Dynamic arguments for stack to be checked before parsing
 	*/
-	private static function stack_work($args, $assoc_args)
+	private function stack_work($args, $assoc_args)
 	{
+		$configurator = \EE_CLI::get_configurator();
 		print_r($args);
 		print_r($assoc_args);
 		foreach ( $assoc_args as $key => $value) {
@@ -268,7 +269,12 @@ class Runner {
 				if ($args[1] === 'install'){
 					// check if key matches any stack config
 					// otherwise throw error if not exists
-					unset( $assoc_args[ $key ] );
+					if($configurator->check_stack_exists($this->global_config_path, $key)){
+						unset( $assoc_args[ $key ] );
+					}
+					else {
+						print("Error:");
+					}
 				}
 			}
 		}