diff --git a/_posts/2016-11-29-novemb-rs-code-sprint-weekend-2016-retrospective.md b/_posts/2016-11-29-novemb-rs-code-sprint-weekend-2016-retrospective.md
index 6f372f5..7197b7b 100644
--- a/_posts/2016-11-29-novemb-rs-code-sprint-weekend-2016-retrospective.md
+++ b/_posts/2016-11-29-novemb-rs-code-sprint-weekend-2016-retrospective.md
@@ -12,7 +12,7 @@ Bringing people together is one goal of the Rust community and coding, learning
 
 {::options parse_block_html="true" /}
 <div class="image" style="text-align:center">
-![novemb.rs @ C4](http://tmp.fnordig.de/novemb.rs/th-novembrs-sign.jpg)
+![novemb.rs @ C4](//tmp.fnordig.de/novemb.rs/th-novembrs-sign.jpg)
 <p>We opened doors at Chaos Computer Club Cologne</p>
 </div>
 {::options parse_block_html="false" /}