diff --git a/Makefile b/Makefile
index 9ab38d1..31c75c0 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-BINS=sshwot-export-known-hosts
+BINS:=sshwot-export-known-hosts
 
 SSHWOT_EXPORT_KNOWN_HOSTS_MAIN:=src/main-export-known-hosts.py
 SSHWOT_EXPORT_KNOWN_HOSTS_DEPS:=$(SSHWOT_EXPORT_KNOWN_HOSTS_MAIN) src/entry.py src/hashing.py src/process_known_hosts.py src/write_file.py