diff --git a/local/bin/sphere.sh b/local/bin/sphere.sh
index 4422dde..28fa0d5 100755
--- a/local/bin/sphere.sh
+++ b/local/bin/sphere.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-cmd_url=kelder.zeus.ugent.be/webcam/cgi/ptdc.cgi
+cmd_url="https://kelder.zeus.ugent.be/webcam/cgi/ptdc.cgi"
 
 if [ -n "$1" ]; then
     while [ -n "$1" ]; do