diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 78c34b58f..b70b972f2 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,6 +2,11 @@
 Changelog
 =========
 
+Version 13.17
+=============
+
+* Fixed Deneb Readout errors to closer resemble reality. Fidelities were reported as errors. `#125 <https://github.com/iqm-finland/iqm-client/pull/125>`_
+
 Version 13.16
 =============
 
diff --git a/src/iqm/qiskit_iqm/fake_backends/fake_deneb.py b/src/iqm/qiskit_iqm/fake_backends/fake_deneb.py
index 53786d881..830447de3 100644
--- a/src/iqm/qiskit_iqm/fake_backends/fake_deneb.py
+++ b/src/iqm/qiskit_iqm/fake_backends/fake_deneb.py
@@ -105,12 +105,12 @@ def IQMFakeDeneb() -> IQMFakeBackend:
         two_qubit_gate_durations={"cz": 120.0, "move": 96.0},
         readout_errors={
             "COMP_R": {"0": 0.0, "1": 0.0},
-            "QB1": {"0": 0.977, "1": 0.977},
-            "QB2": {"0": 0.977, "1": 0.977},
-            "QB3": {"0": 0.977, "1": 0.977},
-            "QB4": {"0": 0.977, "1": 0.977},
-            "QB5": {"0": 0.977, "1": 0.977},
-            "QB6": {"0": 0.977, "1": 0.977},
+            "QB1": {"0": 0.02, "1": 0.02},
+            "QB2": {"0": 0.02, "1": 0.02},
+            "QB3": {"0": 0.02, "1": 0.02},
+            "QB4": {"0": 0.02, "1": 0.02},
+            "QB5": {"0": 0.02, "1": 0.02},
+            "QB6": {"0": 0.02, "1": 0.02},
         },
         name="sample-chip",
     )