diff --git a/python/revng/cli/_commands/override_by_name.py b/python/revng/cli/_commands/override_by_name.py
index c44d17911..13cde12a9 100644
--- a/python/revng/cli/_commands/override_by_name.py
+++ b/python/revng/cli/_commands/override_by_name.py
@@ -72,7 +72,7 @@ class ModelOverrideByName(Command):
 
             # Check if it's YAML
             saved_file.seek(0)
-            input_is_yaml = saved_file.read(3) == "---"
+            input_is_yaml = saved_file.read(3) == b"---"
 
             # Extract model, if necessary
             result = run_revng_command(