diff --git a/sdrbase/dsp/scopevisng.cpp b/sdrbase/dsp/scopevisng.cpp
index 421e81fa9..414f1069d 100644
--- a/sdrbase/dsp/scopevisng.cpp
+++ b/sdrbase/dsp/scopevisng.cpp
@@ -192,7 +192,7 @@ void ScopeVisNG::feed(const SampleVector::const_iterator& cbegin, const SampleVe
 					if (triggerCondition.m_triggerData.m_triggerDelay > 0) // there is a delay => initialize the delay
 					{
 						triggerCondition.m_triggerDelayCount = triggerCondition.m_triggerData.m_triggerDelay;
-						m_triggerState == TriggerDelay;
+						m_triggerState = TriggerDelay;
 					}
 					else
 					{
@@ -297,7 +297,6 @@ bool ScopeVisNG::nextTrigger()
 	return false; // final
 }
 
-// TODO: should handle previous and live traces the same way from a stored buffer
 int ScopeVisNG::processTraces(int beginPointDelta, int endPointDelta, TraceBackBuffer& traceBuffer, bool traceStart)
 {
     SampleVector::iterator begin = traceBuffer.current() - beginPointDelta;
diff --git a/sdrbase/dsp/scopevisng.h b/sdrbase/dsp/scopevisng.h
index 24d275e6c..2d9be90b5 100644
--- a/sdrbase/dsp/scopevisng.h
+++ b/sdrbase/dsp/scopevisng.h
@@ -555,7 +555,18 @@ private:
     int m_sampleRate;
     TraceBackDiscreteMemory m_traceDiscreteMemory; //!< Complex trace memory for triggered states TODO: vectorize when more than on input is allowed
 
-    bool nextTrigger();
+    /**
+     * Moves on to the next trigger if any or increments trigger count if in repeat mode
+     * - If not final it returns true
+     * - If final i.e. signal is actually triggerd it returns false
+     */
+    bool nextTrigger(); //!< Returns true if not final
+
+    /**
+     * Process traces from complex trace memory buffer.
+     * - if finished it returns the number of unprocessed samples left in the buffer
+     * - if not finished it returns -1
+     */
     int processTraces(int beginPointDelta, int endPointDelta, TraceBackBuffer& traceBuffer, bool traceStart = false);
 };