diff --git a/modules/socketlib b/modules/socketlib
index d4c95db..4e6d022 100644
--- a/modules/socketlib
+++ b/modules/socketlib
@@ -5,6 +5,7 @@ Files:
 m4/socketlib.m4
 
 Depends-on:
+sys_socket
 
 configure.ac:
 gl_SOCKETLIB