diff --git a/tools/upmap/upmap-remapped.py b/tools/upmap/upmap-remapped.py
index 002e5b8..0edc0a1 100755
--- a/tools/upmap/upmap-remapped.py
+++ b/tools/upmap/upmap-remapped.py
@@ -38,7 +38,7 @@
 # Hacked by: Dan van der Ster <daniel.vanderster@cern.ch>
 
 
-import json, subprocess, sys
+import json, subprocess, sys, re
 
 try:
   import rados
@@ -159,6 +159,7 @@ def rm_upmap_pg_items(pgid):
     cmd = {"prefix": "osd dump", "format": "json"}
     ret, output, errs = cluster.mon_command(json.dumps(cmd), b'', timeout=5)
     osd_dump_json = output.decode('utf-8').strip()
+  osd_dump_json = re.sub(r':\s*inf\b', ': "inf"', osd_dump_json)
   upmaps = json.loads(osd_dump_json)['pg_upmap_items']
 except ValueError:
   eprint('Error loading existing upmaps')