diff --git a/libdaggy/src/executors/task/DaggyRunnerTaskExecutor.cpp b/libdaggy/src/executors/task/DaggyRunnerTaskExecutor.cpp
index 296a558..22d16d1 100644
--- a/libdaggy/src/executors/task/DaggyRunnerTaskExecutor.cpp
+++ b/libdaggy/src/executors/task/DaggyRunnerTaskExecutor.cpp
@@ -316,9 +316,8 @@ void DaggyRunnerTaskExecutor::monitor()
                                           task["taskName"].GetString());
         auto it          = taskResources.find(tid);
         if (it != taskResources.end()) {
-          const auto &res = taskResources.at(tid);
-          caps.current.cores += res.cores;
-          caps.current.memoryMB += res.memoryMB;
+          caps.current.cores += it->second.cores;
+          caps.current.memoryMB += it->second.memoryMB;
         }
 
         auto attempt = attemptRecordFromJSON(task["attempt"]);