diff --git a/tests/utils.py b/tests/utils.py
index 5083d48..7e7abdf 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -539,8 +539,8 @@
             elif line.startswith("Qy = "):
                 key_data["y"] = int(line.split("=")[1], 16)
 
-    if key_data is not None:
-        vectors.append(key_data)
+    assert key_data is not None
+    vectors.append(key_data)
 
     return vectors
 
@@ -559,9 +559,6 @@
     for line in vector_data:
         line = line.strip()
 
-        if not line or line.startswith("#"):
-            continue
-
         curve_match = curve_rx.match(line)
         if curve_match:
             curve_name = _ECDSA_CURVE_NAMES[curve_match.group("curve")]
@@ -593,8 +590,8 @@
             elif line.startswith("Result = "):
                 data["fail"] = line.split("=")[1].strip()[0] == "F"
 
-    if data is not None:
-        vectors.append(data)
+    assert data is not None
+    vectors.append(data)
     return vectors