diff --git a/xo-procedure2/include/xo/procedure2/PrimitiveRegistry.hpp b/xo-procedure2/include/xo/procedure2/PrimitiveRegistry.hpp
index c5227ec7..f2110d46 100644
--- a/xo-procedure2/include/xo/procedure2/PrimitiveRegistry.hpp
+++ b/xo-procedure2/include/xo/procedure2/PrimitiveRegistry.hpp
@@ -72,7 +72,7 @@ namespace xo {
             static bool install_aux(InstallSink sink,
                                     PrimitiveRepr * pm,
                                     InstallFlags flags) {
-                scope log(XO_DEBUG(true));
+                scope log(XO_DEBUG(false));
 
                 if (flags != InstallFlags::f_none) {
                     log && log("create primitive", xtag("name", pm->name()));