diff --git a/varios/viewer b/varios/viewer
index 2265cde..7742c81 100755
--- a/varios/viewer
+++ b/varios/viewer
@@ -1,4 +1,9 @@
 #!/bin/sh
+# Script que busca formatos compatibles *.gif *.jpeg *.jpg *.png y los muestra en la pantalla
+# Dependencias: sxiv o nsxiv
 
-# Buscar formatos compatibles *.gif *.jpeg *.jpg *.png
-sxiv -pa "$@" 2>/dev/null
+if command -v sxiv; then
+	sxiv -pa "$@" 2>/dev/null &
+elif command -v nsxiv; then
+	nsxiv -pa "$@" 2>/dev/null &
+fi