diff --git a/sat/core/sat_main.py b/sat/core/sat_main.py
index 959706ef..fe7aeee7 100644
--- a/sat/core/sat_main.py
+++ b/sat/core/sat_main.py
@@ -622,6 +622,7 @@ class SAT(service.Service):
         """associate a namespace to a short name"""
         if short_name in self.ns_map:
             raise exceptions.ConflictError("this short name is already used")
+        log.debug(f"registering namespace {short_name} => {namespace}")
         self.ns_map[short_name] = namespace
 
     def getNamespaces(self):