diff --git a/_posts/2019-08-02-program-structure-and-composability.md b/_posts/2019-08-02-program-structure-and-composability.md
index 3f8281a..41facc0 100644
--- a/_posts/2019-08-02-program-structure-and-composability.md
+++ b/_posts/2019-08-02-program-structure-and-composability.md
@@ -499,7 +499,7 @@ func InstConn(cmp *mcmp.Component, defaultAddr string) *RedisConn {
     // has been initialized yet. They will remain empty until initialization has
     // occurred.
     redisConn := new(RedisConn)
-    addrParam := mcfg.String(cmp, "-addr", defaultAddr, "Address of redis instance to connect to")
+    addrParam := mcfg.String(cmp, "addr", defaultAddr, "Address of redis instance to connect to")
 
     mrun.InitHook(cmp, func() {
         // This hook will run after parameter initialization has happened, and