diff --git a/src/qibolab/instruments/zhinst/pulse.py b/src/qibolab/instruments/zhinst/pulse.py
index 52ce6f921..6878d0ea9 100644
--- a/src/qibolab/instruments/zhinst/pulse.py
+++ b/src/qibolab/instruments/zhinst/pulse.py
@@ -15,7 +15,9 @@
 def select_pulse(pulse: Pulse):
     """Return laboneq pulse object corresponding to the given qibolab pulse."""
     if isinstance(pulse.envelope, Rectangular):
-        can_compress = pulse.type is not PulseType.READOUT
+        # FIXME:
+        # can_compress = pulse.type is not PulseType.READOUT
+        can_compress = False
         return laboneq.pulse_library.const(
             length=round(pulse.duration * NANO_TO_SECONDS, 9),
             amplitude=pulse.amplitude,
@@ -33,7 +35,9 @@ def select_pulse(pulse: Pulse):
     if isinstance(pulse.envelope, GaussianSquare):
         sigma = pulse.envelope.rel_sigma
         width = pulse.envelope.width
-        can_compress = pulse.type is not PulseType.READOUT
+        # FIXME:
+        # can_compress = pulse.type is not PulseType.READOUT
+        can_compress = False
         return laboneq.pulse_library.gaussian_square(
             length=round(pulse.duration * NANO_TO_SECONDS, 9),
             width=round(pulse.duration * NANO_TO_SECONDS, 9) * width,
diff --git a/src/qibolab/instruments/zhinst/sweep.py b/src/qibolab/instruments/zhinst/sweep.py
index 69c8810df..892368eee 100644
--- a/src/qibolab/instruments/zhinst/sweep.py
+++ b/src/qibolab/instruments/zhinst/sweep.py
@@ -22,7 +22,9 @@ def classify_sweepers(
     for sweeper in sweepers:
         if sweeper.parameter is Parameter.bias or (
             sweeper.parameter is Parameter.amplitude
-            and sweeper.pulses[0].type is PulseType.READOUT
+            # FIXME:
+            # and sweeper.pulses[0].type is PulseType.READOUT
+            and False
         ):
             nt_sweepers.append(sweeper)
         else: