diff --git a/CMakeLists.txt b/CMakeLists.txt
index 46811e0d87d..985f9dac11a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -521,7 +521,7 @@ SET(mod_md_extra_sources
   modules/md/md_ocsp.c               modules/md/md_util.c               
   modules/md/mod_md_config.c         modules/md/mod_md_drive.c
   modules/md/mod_md_os.c             modules/md/mod_md_status.c
-  modules/md/mod_md_ocsp.c           modules/md/md_tailscale.c
+  modules/md/mod_md_ocsp.c
 )
 SET(mod_optional_hook_export_extra_defines AP_DECLARE_EXPORT) # bogus reuse of core API prefix
 SET(mod_proxy_extra_defines          PROXY_DECLARE_EXPORT)