diff --git a/src/commands.hxx b/src/commands.hxx
index 8ff91b6..1f3185c 100644
--- a/src/commands.hxx
+++ b/src/commands.hxx
@@ -1506,6 +1506,7 @@ inline void Script::initPrototypes() {
   add(new Set);
   add(new UnSet);
   add(new Timeout);
+  add(new Certificate);
 }
 
 #endif