diff --git a/.gitmodules b/.gitmodules
index 525a7635f2af56df5b0895887dc9327a8eae5f15..72b6bb79504d968cb0c1091bca59137f6e9ebf0d 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,4 +7,4 @@
 	url = https://github.com/kalkspace/pixel.git
 [submodule "community/cert"]
 	path = community/cert
-	url = git@github.com:c3CERT/rc3_tiles.git
+	url = https://github.com/c3CERT/rc3_tiles.git