--- a/controller/Makefile.am
+++ b/controller/Makefile.am
@@ -1,5 +1,5 @@
 plugin_LTLIBRARIES = jamincont_1912.la
-plugindir = @prefix@/lib/ladspa
+plugindir = @libdir@/ladspa
 jamincont_1912_la_CFLAGS = @OSC_CFLAGS@ -I../src
 jamincont_1912_la_LIBADD = @OSC_LIBS@
 jamincont_1912_la_LDFLAGS = -module -avoid-version -Wc,-nostartfiles