diff --git a/library/src/calculator_functions.cpp b/library/src/calculator_functions.cpp
index f4389fb..9e65faf 100644
--- a/library/src/calculator_functions.cpp
+++ b/library/src/calculator_functions.cpp
@@ -548,6 +548,7 @@ double Calculator::GetCostFromDuration(Configuration* cfg,
 
             if (current.time() >= to) {
                 if (carryOverNotSet) {
+                    end_datetime = start;
                     return 0;
                 } else {
                     QDateTime const dt = start;