--- Makefile.in
+++ Makefile.in
@@ -28,11 +28,11 @@
 
 INSTALL_BINDIR		:= @prefix@/bin
 INSTALL_INCDIR		:= @prefix@/include/rubberband
-INSTALL_LIBDIR		:= @prefix@/lib
-INSTALL_VAMPDIR		:= @prefix@/lib/vamp
-INSTALL_LADSPADIR	:= @prefix@/lib/ladspa
+INSTALL_LIBDIR		:= @libdir@
+INSTALL_VAMPDIR		:= @libdir@/vamp
+INSTALL_LADSPADIR	:= @libdir@/ladspa
 INSTALL_LRDFDIR		:= @prefix@/share/ladspa/rdf
-INSTALL_PKGDIR		:= @prefix@/lib/pkgconfig
+INSTALL_PKGDIR		:= @libdir@/pkgconfig
 
 all:	bin lib $(PROGRAM_TARGET) $(STATIC_TARGET) $(DYNAMIC_TARGET) $(VAMP_TARGET) $(LADSPA_TARGET)