diff --git a/Makefile-decls.am b/Makefile-decls.am
index d7e61355..aa93a5f2 100644
--- a/Makefile-decls.am
+++ b/Makefile-decls.am
@@ -43,7 +43,7 @@ gir_DATA =
 typelibdir = $(libdir)/girepository-1.0
 typelib_DATA =
 gsettings_SCHEMAS =
-ostree_bootdir = /usr/lib/ostree
+ostree_bootdir = $(prefix)/usr/lib/ostree
 ostree_boot_PROGRAMS =
 
 # This is a special facility to chain together hooks easily