diff --git a/guppylang/std/quantum.py b/guppylang/std/quantum.py
index 2e0bac48..a2ef2198 100644
--- a/guppylang/std/quantum.py
+++ b/guppylang/std/quantum.py
@@ -159,4 +159,5 @@ def measure_array(qubits: array[qubit, N] @ owned) -> array[bool, N]:
 @no_type_check
 def discard_array(qubits: array[qubit, N] @ owned) -> None:
     """Discard an array of qubits."""
-    _ = array(discard(q) for q in qubits)
+    for q in qubits:
+        discard(q)