diff --git a/fuzzers/FRET/src/systemstate/observers.rs b/fuzzers/FRET/src/systemstate/observers.rs
index 03e4771d68..a285f11596 100644
--- a/fuzzers/FRET/src/systemstate/observers.rs
+++ b/fuzzers/FRET/src/systemstate/observers.rs
@@ -294,16 +294,11 @@ fn add_abb_info(trace: &mut Vec<ExecInterval>, table: &HashMap<u64, ReducedFreeR
                             open_abb_at_this_task_or_level.insert( (trace[i].level, if trace[i].level<2 {&curr_name} else {trace[i].start_capture.1.as_str()}) , i);
                             task_has_started.insert(curr_name.clone());
                         } else {
-                            if trace[i].start_capture.1 == "isr_starter" { // fix up case for isr starter, which does not always end
-                                if let Some(last) = open_abb_at_this_task_or_level.get(&(trace[i].level, if trace[i].level<2 {&curr_name} else {trace[i].start_capture.1.as_str()})) {
-                                    wip_abb_trace.push(wip_abb_trace[*last].clone());
-                                } else {
-                                    wip_abb_trace.push(Rc::new(RefCell::new(AtomicBasicBlock{start: edges[i].1.unwrap_or(0), ends: HashSet::new(), level: if trace[i].level<2 {trace[i].level} else {2}})))
-                                }
-                            } else {
-                                // generic case, continue a preempted block
-                                let last = open_abb_at_this_task_or_level.get(&(trace[i].level, if trace[i].level<2 {&curr_name} else {trace[i].start_capture.1.as_str()})).expect(&format!("Continued block with no start {} {:?} {:?} {} {}", trace[i].start_tick, trace[i].start_capture, trace[i].end_capture, task_has_started.contains(curr_name),trace[i].level));
+                            if let Some(last) = open_abb_at_this_task_or_level.get(&(trace[i].level, if trace[i].level<2 {&curr_name} else {trace[i].start_capture.1.as_str()})) {
                                 wip_abb_trace.push(wip_abb_trace[*last].clone());
+                            } else {
+                                eprintln!("Continued block with no start {} {:?} {:?} {} {}", trace[i].start_tick, trace[i].start_capture, trace[i].end_capture, task_has_started.contains(curr_name),trace[i].level);
+                                wip_abb_trace.push(Rc::new(RefCell::new(AtomicBasicBlock{start: edges[i].1.unwrap_or(0), ends: HashSet::new(), level: if trace[i].level<2 {trace[i].level} else {2}})))
                             }
                         }
                     },