diff --git a/src/yunohost/log.py b/src/yunohost/log.py
index c322d9ef5..ef7658b01 100644
--- a/src/yunohost/log.py
+++ b/src/yunohost/log.py
@@ -398,7 +398,8 @@ class OperationLogger(object):
 
         dump = yaml.safe_dump(self.metadata, default_flow_style=False)
         for data in self.data_to_redact:
-            dump = dump.replace(data, "**********")
+            # N.B. : we need quotes here, otherwise yaml isn't happy about loading the yml later
+            dump = dump.replace(data, "'**********'")
         with open(self.md_path, 'w') as outfile:
             outfile.write(dump)