diff --git a/mercurial/statprof.py b/mercurial/statprof.py
--- a/mercurial/statprof.py
+++ b/mercurial/statprof.py
@@ -922,7 +922,7 @@
 
     load_data(path=path)
 
-    display(**displayargs)
+    display(**pycompat.strkwargs(displayargs))
 
     return 0