diff --git a/config.go b/config.go
index ffb6bfb..6bb4a1d 100644
--- a/config.go
+++ b/config.go
@@ -111,6 +111,7 @@ func newConfig() (Config, error) {
 
 func envOr(k, v string) string {
 	if s := os.Getenv(k); s != "" {
+		log.Printf("found $%s = %s", k, s)
 		return s
 	}
 	return v