diff --git a/src/users/user_feedback.cpp b/src/users/user_feedback.cpp
index 2d539f95665a08806139cb6286fffd06e01c728d..bdf922ea03d2459a11b7ad7d2d52598b33e645f2 100644
--- a/src/users/user_feedback.cpp
+++ b/src/users/user_feedback.cpp
@@ -5,6 +5,8 @@
 #include <limits>
 #include <string>
 
+#define EPS 0.00001
+
 /* FeedbackUser */
 void FeedbackUser::init_FeedbackUser(
     std::string name, const rapidjson::Value &param)
@@ -86,14 +88,15 @@ void FeedbackUser::jobs_to_submit(
     profiles = std::list<Profile *>();
 
     /* Add the free sessions starting now to the list of active sessions */
-    while (!free_sessions.empty() && free_sessions.top()->start_time <= date)
+    while (!free_sessions.empty() && free_sessions.top()->start_time < date + EPS)
     {
         active_sessions.push_back(free_sessions.top());
         free_sessions.pop();
     }
     PPK_ASSERT_ERROR(!active_sessions.empty(),
-        "User %s has been called to sumbit but she has no active session",
-        user_name.c_str());
+        "User %s has been called to sumbit but she has no active session."
+        "Her next_submission date is %f, her next free session start time is %f",
+        user_name.c_str(), this->date_of_next_submission, free_sessions.top()->start_time);
 
 
     /* For each active session, add the jobs to submit now to the list `jobs` */
@@ -107,7 +110,7 @@ void FeedbackUser::jobs_to_submit(
         double offset = active_sess->start_time;
 
         while (!job_list->empty()
-            && job_list->front()->submission_time + offset <= date)
+            && job_list->front()->submission_time + offset < date + EPS)
         {
             Job *job = new Job(*job_list->front()); // Cast const Job * -> Job *
             Profile *job_profile = new Profile();