diff --git a/lib/message/mu-fields.cc b/lib/message/mu-fields.cc
index aec8c7ab..6727e573 100644
--- a/lib/message/mu-fields.cc
+++ b/lib/message/mu-fields.cc
@@ -105,7 +105,7 @@ validate_field_flags()
 			++flagnum;
 
 		if (flagnum > 1) {
-			//g_warning("invalid field %*s", STR_V(field.name));
+			//g_warning("invalid field %*.s", STR_V(field.name));
 			return false;
 		}
 	}