diff --git a/Makefile b/Makefile
index 4cfd813..b938c0f 100644
--- a/Makefile
+++ b/Makefile
@@ -24,18 +24,18 @@ default: css
 .PHONY: clean install stop test php css
 
 # Installation
-# ifndef ROOT_DIR
-# $(error Edit this Makefile and set the ROOT_DIR variable)
-# endif
-# ifndef INSTALL_DIR
-# $(error Edit this Makefile and set the INSTALL_DIR variable)
-# endif
-# ifndef STAGING_DIR
-# $(error Edit this Makefile and set the STAGING_DIR variable)
-# endif
-# ifndef ROOT_PATH
-# $(error Edit this Makefile and set the ROOT_PATH variable)
-# endif
+ifndef ROOT_DIR
+$(error Edit this Makefile and set the ROOT_DIR variable)
+endif
+ifndef INSTALL_DIR
+$(error Edit this Makefile and set the INSTALL_DIR variable)
+endif
+ifndef STAGING_DIR
+$(error Edit this Makefile and set the STAGING_DIR variable)
+endif
+ifndef ROOT_PATH
+$(error Edit this Makefile and set the ROOT_PATH variable)
+endif
 
 SRC_DIR			= src
 _SRC_FLS 		= config.html config.js index.html index.js imgsort.php style.css style.css.map