diff --git a/plugins/samplesink/bladerfoutput/bladerfoutput.cpp b/plugins/samplesink/bladerfoutput/bladerfoutput.cpp
index 4b51497df..56f5ea674 100644
--- a/plugins/samplesink/bladerfoutput/bladerfoutput.cpp
+++ b/plugins/samplesink/bladerfoutput/bladerfoutput.cpp
@@ -40,6 +40,7 @@ BladerfOutput::BladerfOutput(DeviceSinkAPI *deviceAPI) :
 	m_deviceDescription("BladeRFOutput"),
 	m_running(false)
 {
+    m_sampleSourceFifo.resize(16*BLADERFOUTPUT_BLOCKSIZE);
     openDevice();
     m_deviceAPI->setBuddySharedPtr(&m_sharedParams);
 }
diff --git a/plugins/samplesink/bladerfoutput/bladerfoutputthread.cpp b/plugins/samplesink/bladerfoutput/bladerfoutputthread.cpp
index ed0f81df5..94eddc475 100644
--- a/plugins/samplesink/bladerfoutput/bladerfoutputthread.cpp
+++ b/plugins/samplesink/bladerfoutput/bladerfoutputthread.cpp
@@ -28,7 +28,6 @@ BladerfOutputThread::BladerfOutputThread(struct bladerf* dev, SampleSourceFifo*
 	m_log2Interp(0),
 	m_fcPos(0)
 {
-    m_sampleFifo->resize(16*BLADERFOUTPUT_BLOCKSIZE);
 }
 
 BladerfOutputThread::~BladerfOutputThread()
diff --git a/plugins/samplesink/limesdroutput/limesdroutput.cpp b/plugins/samplesink/limesdroutput/limesdroutput.cpp
index 94d2a8b7d..c383af2ca 100644
--- a/plugins/samplesink/limesdroutput/limesdroutput.cpp
+++ b/plugins/samplesink/limesdroutput/limesdroutput.cpp
@@ -43,6 +43,7 @@ LimeSDROutput::LimeSDROutput(DeviceSinkAPI *deviceAPI) :
     m_running(false),
     m_channelAcquired(false)
 {
+    m_sampleSourceFifo.resize(16*LIMESDROUTPUT_BLOCKSIZE);
     m_streamId.handle = 0;
     suspendRxBuddies();
     suspendTxBuddies();
diff --git a/plugins/samplesink/limesdroutput/limesdroutputthread.cpp b/plugins/samplesink/limesdroutput/limesdroutputthread.cpp
index c79e95554..bd060ac49 100644
--- a/plugins/samplesink/limesdroutput/limesdroutputthread.cpp
+++ b/plugins/samplesink/limesdroutput/limesdroutputthread.cpp
@@ -27,7 +27,6 @@ LimeSDROutputThread::LimeSDROutputThread(lms_stream_t* stream, SampleSourceFifo*
     m_log2Interp(0),
     m_fcPos(LimeSDROutputSettings::FC_POS_CENTER)
 {
-    m_sampleFifo->resize(16*LIMESDROUTPUT_BLOCKSIZE);
 }
 
 LimeSDROutputThread::~LimeSDROutputThread()