diff --git a/tests/Makefile.am b/tests/Makefile.am
index 0d2758c36..ba619eb7f 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -2,4 +2,8 @@
 
 include $(top_srcdir)/Makefile.am.common
 
-SUBDIRS = db kdc gss plugin
+SUBDIRS = db kdc gss
+
+if HAVE_DLOPEN
+SUBDIRS += plugin
+endif