diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2c56f4ec0..1e0045124 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -87,7 +87,7 @@ set(ARRUS_DOCS_INSTALL_DIR docs)
 ################################################################################
 # Common dependencies
 ################################################################################
-find_package(Us4 0.7.0 EXACT REQUIRED US4OEM HV256 DBARLite)
+find_package(Us4 0.7.1 EXACT REQUIRED US4OEM HV256 DBARLite)
 find_package(Boost REQUIRED)
 set(Boost_USE_STATIC_LIBS ON)
 find_package(Protobuf REQUIRED)
diff --git a/api/python/arrus/utils/imaging.py b/api/python/arrus/utils/imaging.py
index 29b3a82d2..8ea3dc8e6 100644
--- a/api/python/arrus/utils/imaging.py
+++ b/api/python/arrus/utils/imaging.py
@@ -548,7 +548,7 @@ def process(self, data):
 
 def _get_unique_pulse(sequence):
     if isinstance(sequence, arrus.ops.imaging.SimpleTxRxSequence):
-        return sequence.pulse.center_freuqency
+        return sequence.pulse.center_frequency
     elif isinstance(sequence, arrus.ops.us4r.TxRxSequence):
         pulses = {tx_rx.tx.excitation for tx_rx in sequence.ops}
         if len(pulses) > 1: