diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 72e7f36..8af693d 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -192,8 +192,6 @@
 			if (!(prot & PROT_EXEC))
 				dso__set_loaded(dso);
 		}
-
-		nsinfo__put(dso->nsinfo);
 		dso->nsinfo = nsi;
 
 		if (build_id__is_defined(bid))