diff --git a/src/bin/Makefile.am b/src/bin/Makefile.am
index fca4b3c9..03320937 100644
--- a/src/bin/Makefile.am
+++ b/src/bin/Makefile.am
@@ -1,3 +1,4 @@
+AUTOMAKE_OPTIONS = subdir-objects
 MAINTAINERCLEANFILES = Makefile.in
 
 bin_PROGRAMS = terminology tybg tyalpha typop tyq tycat tyls