diff --git a/system-configuration.scm b/system-configuration.scm
index bd75315..57a8592 100644
--- a/system-configuration.scm
+++ b/system-configuration.scm
@@ -10,7 +10,7 @@
 ;; Indicate which modules to import to access the variables
 ;; used in this configuration.
 (use-modules (gnu)
-	     (nongnu packages linux))
+             (nongnu packages linux))
 (use-service-modules cups desktop networking ssh xorg)
 
 (operating-system