diff --git a/buidl/script.py b/buidl/script.py
index 0952b1e..a6c9e48 100644
--- a/buidl/script.py
+++ b/buidl/script.py
@@ -131,7 +131,7 @@ def raw_serialize(self):
                 # get the length in bytes
                 length = len(command)
                 # for large lengths, we have to use a pushdata op code
-                if length < 75:
+                if length <= 75:
                     # turn the length into a single byte integer
                     result += int_to_byte(length)
                 elif length > 75 and length < 0x100:
diff --git a/buidl/test/test_script.py b/buidl/test/test_script.py
index c0c8de4..f08383a 100644
--- a/buidl/test/test_script.py
+++ b/buidl/test/test_script.py
@@ -38,6 +38,13 @@ def test_serialize(self):
         script_pubkey = BytesIO(bytes.fromhex(want))
         script = Script.parse(script_pubkey)
         self.assertEqual(script.serialize().hex(), want)
+    
+    # Added to test scripts with length 75 bytes are being serialized
+    def test_serialize_elem_75(self):
+        want = "4d6a4b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        test_element_75_bytes = b'\x00' * 75
+        test_script = Script([0x6a, test_element_75_bytes])
+        self.assertEqual(test_script.serialize().hex(), want)
 
 
 class P2PKHScriptPubKeyTest(TestCase):