diff --git a/contrib/stats.py b/contrib/stats.py
index 9a9a281..a2539f0 100644
--- a/contrib/stats.py
+++ b/contrib/stats.py
@@ -13,7 +13,9 @@ path = sys.argv[1] if len(sys.argv) >= 2 else "."
 # into one. Same applies for all stats.
 special_stats = {
     "firemindam": {"template": "dmg-fire"},
-    "firemaxdam": None,
+    "firemaxdam": {
+        "template": "fire-max"
+    },  # Cathan's rule, no other max ele dmg source exists
     "lightmindam": {"template": "dmg-ltng"},
     "lightmaxdam": None,
     "magicmindam": {"template": "dmg-mag"},
diff --git a/d2warehouse/data/stats.json b/d2warehouse/data/stats.json
index 77a46d6..ef37350 100644
--- a/d2warehouse/data/stats.json
+++ b/d2warehouse/data/stats.json
@@ -273,6 +273,14 @@
         "save_add": 0,
         "save_param_bits": null
     },
+    "49": {
+        "text": "+# to Maximum Fire Damage",
+        "save_bits": [
+            9
+        ],
+        "save_add": 0,
+        "save_param_bits": null
+    },
     "50": {
         "text": "Adds #-# Lightning Damage",
         "save_bits": [
diff --git a/d2warehouse/tests/test_parse_item.py b/d2warehouse/tests/test_parse_item.py
index ecb2c5b..6cebed8 100644
--- a/d2warehouse/tests/test_parse_item.py
+++ b/d2warehouse/tests/test_parse_item.py
@@ -239,3 +239,12 @@ class ParseItemTest(unittest.TestCase):
         self.assertAlmostEqual(
             lookup_affix(item.suffixes[2], False)["name"], "of Charged Shield"
         )
+
+    def test_cathans_rule(self):
+        # Cathan's Rule: Only source of fire-max stat
+        data = bytes.fromhex(
+            "10008000050054c90448ad74276f910150448c180afc24ff1348fd3f212d85b415d25a48fb0f"
+        )
+        data, item = parse_item(data)
+        self.assertEqual(data, b"")
+        self.assertEqual(str(item.stats[0]), "+10 to Maximum Fire Damage")