diff --git a/glicid/packages/file-systems.scm b/glicid/packages/file-systems.scm
index 8fa853d..0ce572b 100644
--- a/glicid/packages/file-systems.scm
+++ b/glicid/packages/file-systems.scm
@@ -15,6 +15,8 @@
   #:use-module (gnu packages tls)
   #:use-module (gnu packages bison)
   #:use-module (gnu packages flex)
+  #:use-module (gnu packages flex)
+  #:use-module (gnu packages pkg-config)
 
 )