diff --git a/devicehandlers/FixedSlotSequence.cpp b/devicehandlers/FixedSlotSequence.cpp
index 9ff5a1404..bf9ff4fda 100644
--- a/devicehandlers/FixedSlotSequence.cpp
+++ b/devicehandlers/FixedSlotSequence.cpp
@@ -89,6 +89,10 @@ uint32_t FixedSlotSequence::getLengthMs() const {
 }
 
 ReturnValue_t FixedSlotSequence::checkSequence() const {
+	if(slotList.empty()) {
+		error << "Fixed Slot Sequence: Slot list is empty!" << std::endl;
+		std::exit(0);
+	}
 	auto slotIt = slotList.begin();
 	uint32_t count = 0;
 	uint32_t time = 0;