diff --git a/servers/slapd/back-null/Makefile.in b/servers/slapd/back-null/Makefile.in
index 7fd3a934f6..1ca637ffa5 100644
--- a/servers/slapd/back-null/Makefile.in
+++ b/servers/slapd/back-null/Makefile.in
@@ -11,8 +11,9 @@ BUILD_MOD_DYNAMIC = @BUILD_NULL_DYNAMIC@
 mod_DEFS = -DSLAPD_IMPORT
 MOD_DEFS = $(@BUILD_NULL@_DEFS)
 
-shared_LDAP_LIBS = $(LDAP_LIBPATH) -lldap_r -llber
+shared_LDAP_LIBS = $(LDAP_LIBLDAP_R_LA) $(LDAP_LIBLBER_LA)
 NT_LINK_LIBS = -L.. -lslapd $(@BUILD_LIBS_DYNAMIC@_LDAP_LIBS)
+UNIX_LINK_LIBS = $(@BUILD_LIBS_DYNAMIC@_LDAP_LIBS)
 
 LIBBASE = back_null