diff --git a/src/report.cpp b/src/report.cpp
index 7f0eaa879..5c1f42791 100644
--- a/src/report.cpp
+++ b/src/report.cpp
@@ -1142,6 +1142,7 @@ std::string handleReportGHistory (TDB& tdb, T& task, Config& conf)
       if (task.getStatus () == T::deleted)
       {
         epoch = monthlyEpoch (task.getAttribute ("end"));
+        groups[epoch] = 0;
 
         if (deletedGroup.find (epoch) != deletedGroup.end ())
           deletedGroup[epoch] = deletedGroup[epoch] + 1;
@@ -1151,6 +1152,8 @@ std::string handleReportGHistory (TDB& tdb, T& task, Config& conf)
       else if (task.getStatus () == T::completed)
       {
         epoch = monthlyEpoch (task.getAttribute ("end"));
+        groups[epoch] = 0;
+
         if (completedGroup.find (epoch) != completedGroup.end ())
           completedGroup[epoch] = completedGroup[epoch] + 1;
         else