diff --git a/Makefile.am b/Makefile.am
index 3c8ab40..6663ef2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -45,10 +45,12 @@ systemdunit_DATA = src/bluetooth.service
 endif
 endif
 
+plugindir = $(libdir)/bluetooth/plugins
+
 if MAINTAINER_MODE
-plugindir = $(abs_top_srcdir)/plugins/.libs
+build_plugindir = $(abs_top_srcdir)/plugins/.libs
 else
-plugindir = $(libdir)/bluetooth/plugins
+build_plugindir = $(plugindir)
 endif
 
 
@@ -411,7 +413,7 @@ EXTRA_DIST += doc/manager-api.txt \
 AM_YFLAGS = -d
 
 AM_CFLAGS = @DBUS_CFLAGS@ @GLIB_CFLAGS@ @CAPNG_CFLAGS@ \
-		-DBLUETOOTH_PLUGIN_BUILTIN -DPLUGINDIR=\""$(plugindir)"\"
+		-DBLUETOOTH_PLUGIN_BUILTIN -DPLUGINDIR=\""$(build_plugindir)"\"
 
 INCLUDES = -I$(builddir)/lib -I$(builddir)/src -I$(srcdir)/src \
 			-I$(srcdir)/audio -I$(srcdir)/sbc -I$(srcdir)/gdbus \