diff --git a/init/scripts/config_gen.sh b/init/scripts/config_gen.sh
index 700cc40..6ba4e08 100755
--- a/init/scripts/config_gen.sh
+++ b/init/scripts/config_gen.sh
@@ -98,7 +98,7 @@ fix_ownership "${VOLUME_PATH}/mas"
 
 log_info "Linking Synapse and MAS via OIDC..."
 
-CLIENT_ID="synapse-client"
+CLIENT_ID="0000000000000000000SYNAPSE"
 CLIENT_SECRET=$(openssl rand -hex 32)
 ADMIN_SECRET=$(openssl rand -hex 32)
 MATRIX_SECRET=$(openssl rand -hex 32)