diff --git a/firmware/development/engine_sniffer.cpp b/firmware/development/engine_sniffer.cpp
index 7b850d1ab5..0abebaf0fc 100644
--- a/firmware/development/engine_sniffer.cpp
+++ b/firmware/development/engine_sniffer.cpp
@@ -160,8 +160,9 @@ void WaveChart::publish() {
  */
 void WaveChart::addEvent3(const char *name, const char * msg) {
 	ScopePerf perf(PE::EngineSniffer);
+	efitick_t nowNt = getTimeNowNt();
 
-	if (getTimeNowNt() < pauseEngineSnifferUntilNt) {
+	if (nowNt < pauseEngineSnifferUntilNt) {
 		return;
 	}
 #if EFI_TEXT_LOGGING
@@ -191,9 +192,6 @@ void WaveChart::addEvent3(const char *name, const char * msg) {
 		return;
 	}
 
-
-	efitick_t nowNt = getTimeNowNt();
-
 	bool alreadyLocked = lockOutputBuffer(); // we have multiple threads writing to the same output buffer
 
 	if (counter == 0) {
diff --git a/firmware/development/engine_sniffer.h b/firmware/development/engine_sniffer.h
index f53b6486cf..64ac3d633f 100644
--- a/firmware/development/engine_sniffer.h
+++ b/firmware/development/engine_sniffer.h
@@ -27,6 +27,7 @@ public:
 	void publish();
 	bool isFull() const;
 	bool isStartedTooLongAgo() const;
+	// looks like this is only used by functional tests on real hardware
 	efitick_t pauseEngineSnifferUntilNt = 0;
 
 private: