diff --git a/fuzzers/FRET/src/systemstate/mutational.rs b/fuzzers/FRET/src/systemstate/mutational.rs
index e401443f0d..f10f86aea6 100644
--- a/fuzzers/FRET/src/systemstate/mutational.rs
+++ b/fuzzers/FRET/src/systemstate/mutational.rs
@@ -171,21 +171,16 @@ where
                 let hist = metadata.get::<IcHist>().unwrap();
                 let maxtick : u64 = hist.1.0;
                 drop(hist);
-                if interrupt_offsets[0] as u64 > maxtick {  // place interrupt in reachable range
-                    do_rerun = true;
-                    for _ in 0..num_interrupts {
-                        prefix.push(u32::to_le_bytes(myrand.between(0, min(maxtick as usize, u32::MAX as usize)).try_into().expect("ticks > u32")));
-                    }
-                } else {
+                {
                     let choice = myrand.between(1,100);
-                    if choice <= 25 {  // 0.5*0.25 = 12.5% of the time fully randomize all interrupts
+                    if choice <= 25 || *interrupt_offsets.get(0).unwrap_or(&u32::MAX) as u64 > maxtick {  // 0.5*0.25 = 12.5% of the time fully randomize all interrupts
                         do_rerun = true;
                         // let metadata = state.metadata_map();
                         let hist = metadata.get::<IcHist>().unwrap();
                         let maxtick : u64 = hist.1.0;
                         // let maxtick : u64 = (_input.exec_time().expect("No duration found").as_nanos() >> 4).try_into().unwrap();
                         let mut numbers : Vec<u32> = vec![];
-                        for i in 0..num_interrupts {
+                        for i in 0..myrand.between(0,2*min(MAX_NUM_INTERRUPT, maxtick as usize / unsafe{MINIMUM_INTER_ARRIVAL_TIME as usize})) {
                             prefix.push(u32::to_le_bytes(myrand.between(0, min(maxtick, u32::MAX as u64) as usize).try_into().expect("ticks > u32")));
                         }
                     }