diff --git a/fuzzers/wcet_qemu_sys/Cargo.toml b/fuzzers/wcet_qemu_sys/Cargo.toml
index 75f939db12..1fedc8942a 100644
--- a/fuzzers/wcet_qemu_sys/Cargo.toml
+++ b/fuzzers/wcet_qemu_sys/Cargo.toml
@@ -20,3 +20,4 @@ ron = "0.7" # write serialized data - including hashmaps
 hashbrown =  { version = "0.11", features = ["serde", "ahash-compile-time-rng"], default-features=false } # A faster hashmap, nostd compatible
 nix = "0.23.0"
 goblin = "0.4.2"
+either = "1.6.1"
diff --git a/fuzzers/wcet_qemu_sys/src/bin/showmap.rs b/fuzzers/wcet_qemu_sys/src/bin/showmap.rs
index 5baeb16cff..3c00a127c9 100644
--- a/fuzzers/wcet_qemu_sys/src/bin/showmap.rs
+++ b/fuzzers/wcet_qemu_sys/src/bin/showmap.rs
@@ -17,16 +17,19 @@ use libafl::{
         rands::StdRand,
         tuples::{tuple_list},
     },
-    corpus::{InMemoryCorpus,QueueCorpusScheduler},
+    corpus::{Corpus,InMemoryCorpus,QueueCorpusScheduler},
     executors::{ExitKind},
     fuzzer::{StdFuzzer},
     inputs::{Input,BytesInput, HasTargetBytes},
     observers::{VariableMapObserver},
-    state::{StdState},
+    state::{HasCorpus,StdState},
     Error,
     Evaluator,
     stats::SimpleStats,
     events::SimpleEventManager,
+    stages::StdMutationalStage,
+    mutators::BitFlipMutator,
+    Fuzzer,
 };
 use libafl_qemu::{
     edges,
@@ -39,6 +42,7 @@ use libafl_qemu::{
     QemuExecutor,
 };
 
+use either::{Either,Left,Right};
 
 /// The fuzzer main
 pub fn main() {
@@ -95,6 +99,11 @@ pub fn main() {
                 .required(true)
                 .takes_value(true),
         )
+        .arg(
+            Arg::new("single")
+                .long("libafl-single")
+                .takes_value(true)
+        )
         .try_get_matches_from(filter_qemu_args())
     {
         Ok(res) => res,
@@ -128,11 +137,17 @@ pub fn main() {
     worstcases.push("worstcase");
     out_dir.push("queue");
 
-    let in_dir = PathBuf::from(res.value_of("in").unwrap().to_string());
-    if !in_dir.is_dir() {
-        println!("In dir at {:?} is not a valid directory!", &in_dir);
-        return;
-    }
+    let seed = match res.value_of("single") {
+        Some(s) => Left(s.to_string()),
+        None => {
+            let in_dir = PathBuf::from(res.value_of("in").unwrap().to_string());
+            if !in_dir.is_dir() {
+                println!("In dir at {:?} is not a valid directory!", &in_dir);
+                return;
+            }
+            Right(in_dir)
+        },
+    };
 
     let kernel = PathBuf::from(res.value_of("k").unwrap().to_string());
     let edges = match res.value_of("edges") {
@@ -142,7 +157,7 @@ pub fn main() {
 
     let snapshot = PathBuf::from(res.value_of("snapshot").unwrap().to_string());
 
-    fuzz(in_dir, kernel, edges, snapshot)
+    fuzz(seed, kernel, edges, snapshot)
         .expect("An error occurred while fuzzing");
 }
 
@@ -161,7 +176,7 @@ fn virt2phys(vaddr : u64, tab : &goblin::elf::Elf) -> u64 {
 
 /// The actual fuzzer
 fn fuzz(
-    seed_dir: PathBuf,
+    seed: Either<String,PathBuf>,
     kernel: PathBuf,
     dump_edges: Option<PathBuf>,
     snapshot: PathBuf,
@@ -317,10 +332,30 @@ fn fuzz(
         &mut state,
         &mut mgr,
     )?;
-    let firstinput = match seed_dir.clone().is_dir() {
-        true => seed_dir.clone().read_dir().expect("Directory not a directory?").next().expect("Directory empty?").expect("File not in directory?").path(),
-        false => seed_dir.clone()
-    };
+    match seed {
+        Right(pb) => {
+                if state.corpus().count() < 1 {
+            state
+                .load_initial_inputs(&mut fuzzer, &mut executor, &mut mgr, &[pb.clone()])
+                .unwrap_or_else(|_| {
+                    println!("Failed to load initial corpus at {:?}", &pb);
+                    return;
+                });
+            println!("We imported {} inputs from disk.", state.corpus().count());
+        }
+        fuzzer
+            .fuzz_one(&mut tuple_list!(StdMutationalStage::new(BitFlipMutator::new())), &mut executor, &mut state, &mut mgr)
+            .expect("Error in the fuzzing loop");
+
+        },
+        Left(s) => {
+            fuzzer.evaluate_input(&mut state, &mut executor, &mut mgr, BytesInput::new(s.as_bytes().to_vec())).expect("Evaluation failed");
+        }
+    }
+    // let firstinput = match seed.clone().is_dir() {
+    //     true => seed.clone().read_dir().expect("Directory not a directory?").next().expect("Directory empty?").expect("File not in directory?").path(),
+    //     false => seed.clone()
+    // };
     // let secondinput = match seed_dir.clone().is_dir() {
     //     true => {
     //         let mut a = seed_dir.clone().read_dir().expect("Directory not a directory?");
@@ -329,20 +364,7 @@ fn fuzz(
     //     },
     //     false => seed_dir.clone()
     // };
-    fuzzer.evaluate_input(&mut state, &mut executor, &mut mgr, Input::from_file(&firstinput).expect("Could not load file")).expect("Evaluation failed");
     // fuzzer.evaluate_input(&mut state, &mut executor, &mut mgr, Input::from_file(&secondinput).expect("Could not load file")).expect("Evaluation failed");
     // println!("Nach Eval");
-    // if state.corpus().count() < 1 {
-    //     state
-    //         .load_initial_inputs(&mut fuzzer, &mut executor, &mut mgr, &[seed_dir.clone()])
-    //         .unwrap_or_else(|_| {
-    //             println!("Failed to load initial corpus at {:?}", &seed_dir);
-    //             return;
-    //         });
-    //     println!("We imported {} inputs from disk.", state.corpus().count());
-    // }
-    // fuzzer
-    //     .fuzz_one(&mut tuple_list!(StdMutationalStage::new(BitFlipMutator::new())), &mut executor, &mut state, &mut mgr)
-    //     .expect("Error in the fuzzing loop");
     return Ok(());
 }