diff --git a/src/lasp/dsp/lasp_threadedindatahandler.cpp b/src/lasp/dsp/lasp_threadedindatahandler.cpp
index 9a6d724..9223720 100644
--- a/src/lasp/dsp/lasp_threadedindatahandler.cpp
+++ b/src/lasp/dsp/lasp_threadedindatahandler.cpp
@@ -10,6 +10,8 @@
 using namespace std::literals::chrono_literals;
 using lck = std::scoped_lock<std::mutex>;
 using rte = std::runtime_error;
+using std::cerr;
+using std::endl;
 
 class SafeQueue {
   std::queue<DaqData> _queue;
diff --git a/src/lasp/filter/filterbank_design.py b/src/lasp/filter/filterbank_design.py
index 7773917..777b720 100644
--- a/src/lasp/filter/filterbank_design.py
+++ b/src/lasp/filter/filterbank_design.py
@@ -447,7 +447,7 @@ class OctaveBankDesigner(FilterBankDesigner):
             x: Filter band designator
         """
         # Idea: correct for frequency warping:
-        if int(self.fs) in [48000, 96000]:
+        if int(self.fs) in [44100, 48000, 96000]:
             return 1.0
         else:
             raise ValueError('Unimplemented sampling frequency for SOS'
@@ -460,7 +460,7 @@ class OctaveBankDesigner(FilterBankDesigner):
         Args:
             x: Filter band designator
         """
-        if int(self.fs) in [48000, 96000]:
+        if int(self.fs) in [44100, 48000, 96000]:
             return 1.0
         else:
             raise ValueError('Unimplemented sampling frequency for SOS'