diff --git a/src/ctapipe_io_zfits/dl0.py b/src/ctapipe_io_zfits/dl0.py
index 045fd0f..74989fc 100644
--- a/src/ctapipe_io_zfits/dl0.py
+++ b/src/ctapipe_io_zfits/dl0.py
@@ -214,7 +214,7 @@ def is_compatible(cls, input_url):
             return False
 
         if proto_class != "DL0v1.Subarray.Event":
-            log.debug(f"Unsupported PBDHEAD: {proto_class}")
+            log.debug(f"Unsupported PBFHEAD: {proto_class}")
             return False
 
         return True