diff --git a/tfhe/src/shortint/list_compression/compression.rs b/tfhe/src/shortint/list_compression/compression.rs
index 2638f1326..a3a2face4 100644
--- a/tfhe/src/shortint/list_compression/compression.rs
+++ b/tfhe/src/shortint/list_compression/compression.rs
@@ -59,7 +59,8 @@ impl CompressionKey {
 
                 for ct in ct_list {
                     assert!(
-                        ct.noise_level() == NoiseLevel::NOMINAL,
+                        ct.noise_level() == NoiseLevel::NOMINAL
+                            || ct.noise_level() == NoiseLevel::ZERO,
                         "Ciphertexts must have a nominal (post PBS) noise to be compressed"
                     );