diff --git a/package/base/pam/pam.conf b/package/base/pam/pam.conf
index fba698a10..f54ee028f 100644
--- a/package/base/pam/pam.conf
+++ b/package/base/pam/pam.conf
@@ -25,6 +25,7 @@
 # also available if /usr is not mounted.
 #
 libdir="$root/lib"
+includedir="$includedir/security"
 
 # fix libdir in the .la files (the *.so files are in /lib)
 hook_add postflist 5 "sed -i -e \"s,^libdir=.*,libdir=/lib,\" \