diff --git a/sdrbase/dsp/samplesourcefifo.cpp b/sdrbase/dsp/samplesourcefifo.cpp
index 1eb09cdeb..f9ce51b1a 100644
--- a/sdrbase/dsp/samplesourcefifo.cpp
+++ b/sdrbase/dsp/samplesourcefifo.cpp
@@ -23,7 +23,7 @@ SampleSourceFifo::SampleSourceFifo(uint32_t size, uint32_t samplesChunkSize) :
     m_ir(0),
     m_iw(size/2)
 {
-    assert(samplesChunkSize < m_size/4);
+    assert(samplesChunkSize <= m_size/4);
     m_data.resize(2*m_size);
 }