diff --git a/commands.md b/commands.md
index 96a9bd8..39d7200 100644
--- a/commands.md
+++ b/commands.md
@@ -1,4 +1,4 @@
-![Flattr this](//api.flattr.com/button/flattr-badge-large.png)
+![Flattr this](https://api.flattr.com/button/flattr-badge-large.png)
 
 
 # Users