diff --git a/src/mqt/qudits/quantum_circuit/qasm.py b/src/mqt/qudits/quantum_circuit/qasm.py
index d73409a..043f095 100644
--- a/src/mqt/qudits/quantum_circuit/qasm.py
+++ b/src/mqt/qudits/quantum_circuit/qasm.py
@@ -158,7 +158,7 @@ def parse_ignore(line: str, rgxs: dict[str, re.Pattern[str]], warned: dict[str,
         if match:
             # certain operations we can just ignore and warn about
             (op,) = match.groups()
-            if not warned.get(op, False):
+            if not warned.get(op):
                 # warnings.warn(f"Unsupported operation ignored: {op}", SyntaxWarning, stacklevel=2)
                 warned[op] = True
             return True