diff --git a/setup.cfg b/setup.cfg
index 86fe1ad0..8b655b98 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -5,5 +5,6 @@
 home = /home/weewx
 
 prefix =
+exec-prefix =
 install_lib = %(home)s/bin
 install_scripts = %(home)s/bin