diff --git a/check.py b/check.py
index f439a31..35ec96c 100755
--- a/check.py
+++ b/check.py
@@ -69,7 +69,7 @@ class Mapping:
         "-a": re.compile(r"^[0-9]+\~?$"),
         "a": re.compile(r"^[0-9]+\~?$"),
         "b": re.compile(r"^[0-9]+$"),
-        "h": re.compile(r"^[0-9]+\.(1|2|4|8|3|6|12|9)$"),
+        "h": re.compile(r"^[0-9]+\.(1|2|4|8)$"),
     }
 
     def __init__(self, mapping_string, line_number, add_missing_platform = False):