diff --git a/Makefile.tests b/Makefile.tests
index 97a914db6a..7ae2c5ada1 100644
--- a/Makefile.tests
+++ b/Makefile.tests
@@ -12,7 +12,7 @@ AM_CFLAGS +=					\
 
 AM_CPPFLAGS +=					\
 	$(CMOCKA_CFLAGS)			\
-	-DNAMED_PLUGINDIR=\"$(libdir)/named\"	\
+	-DNAMED_PLUGINDIR=\"$(pkglibdir)\"	\
 	-DSKIPPED_TEST_EXIT_CODE=77		\
 	-DTESTS_DIR=\"$(abs_srcdir)\"
 
diff --git a/lib/ns/Makefile.am b/lib/ns/Makefile.am
index 503b7283b0..b2d5d73b4c 100644
--- a/lib/ns/Makefile.am
+++ b/lib/ns/Makefile.am
@@ -1,7 +1,7 @@
 include $(top_srcdir)/Makefile.top
 
 AM_CPPFLAGS +=				\
-	-DNAMED_PLUGINDIR=\"$(libdir)/named\"
+	-DNAMED_PLUGINDIR=\"$(pkglibdir)\"
 
 lib_LTLIBRARIES = libns.la