diff --git a/ophyd_devices/sim/sim_data.py b/ophyd_devices/sim/sim_data.py
index 857225b..c2584e5 100644
--- a/ophyd_devices/sim/sim_data.py
+++ b/ophyd_devices/sim/sim_data.py
@@ -458,7 +458,7 @@ class SimulatedDataMonitor(SimulatedDataBase):
         elif noise == NoiseType.UNIFORM:
             noise = np.random.uniform(-1, 1) * noise_multiplier
             v += noise
-            return v
+            return v if v > 0 else v
         return v