Index: Makefile.in
===================================================================
--- Makefile.in.orig
+++ Makefile.in
@@ -2066,7 +2066,7 @@ libbuzztrax_core_HEADERS = \
 
 
 # -- songio plugins
-songiodir = ${exec_prefix}/lib/buzztrax-songio
+songiodir = ${libdir}/buzztrax-songio
 songio_LTLIBRARIES = libbtbsl.la
 libbtbsl_la_LIBADD = \
   libbuzztrax-core.la \