diff --git a/afl-fuzz/.gitignore b/afl-fuzz/.gitignore
new file mode 100644
index 0000000..3ed9c74
--- /dev/null
+++ b/afl-fuzz/.gitignore
@@ -0,0 +1,2 @@
+target
+out
\ No newline at end of file
diff --git a/afl-fuzz/Cargo.lock b/afl-fuzz/Cargo.lock
new file mode 100644
index 0000000..57114ff
--- /dev/null
+++ b/afl-fuzz/Cargo.lock
@@ -0,0 +1,225 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
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+dependencies = [
+ "cc",
+ "clap",
+ "libc",
+ "rustc_version",
+ "xdg",
+]
+
+[[package]]
+name = "afl-fuzz"
+version = "0.1.0"
+dependencies = [
+ "afl",
+ "script_lang",
+]
+
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+ "winapi",
+]
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+ "bitflags",
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+ "wasi",
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+ "redox_syscall",
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+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
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+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
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+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a23fe958c70412687039c86f578938b4a0bb50ec788e96bce4d6ab00ddd5803"
+dependencies = [
+ "dirs",
+]
diff --git a/afl-fuzz/Cargo.toml b/afl-fuzz/Cargo.toml
new file mode 100644
index 0000000..90d3211
--- /dev/null
+++ b/afl-fuzz/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "afl-fuzz"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+afl = "0.11.0"
+script_lang = { path = ".." }
diff --git a/afl-fuzz/in/program1 b/afl-fuzz/in/program1
new file mode 100644
index 0000000..e38afd8
--- /dev/null
+++ b/afl-fuzz/in/program1
@@ -0,0 +1,9 @@
+fn main() {
+    let x = 1 * 1 + 5;
+    print("hallo");
+    main();
+
+    fn dead_at_this_point(test) {
+        print("cool" + 5);
+    }
+}
\ No newline at end of file
diff --git a/afl-fuzz/src/main.rs b/afl-fuzz/src/main.rs
new file mode 100644
index 0000000..cb77ed3
--- /dev/null
+++ b/afl-fuzz/src/main.rs
@@ -0,0 +1,13 @@
+#[macro_use]
+extern crate afl;
+
+fn main() {
+    fuzz!(|data: &[u8]| {
+        if let Ok(s) = std::str::from_utf8(data) {
+            let tokens = script_lang::Lexer::lex(s).collect::<Result<Vec<_>, _>>();
+            if let Ok(tokens) = tokens {
+                let _ = script_lang::parse(tokens);
+            }
+        }
+    });
+}
diff --git a/test.sl b/test.sl
index 28a4c3b..e0222a7 100644
--- a/test.sl
+++ b/test.sl
@@ -1,19 +1 @@
-fn fizzbuzz() {
-    let i = 0;
-    while i < 100 {
-        let out = single_fizzbuzz(i);
-        print(out);
-    }
-}
-
-fn single_fizzbuzz(n) {
-    if n % 15 == 0 {
-        return "FizzBuzz";
-    } else if n % 5 == 0 {
-        return "Buzz";
-    } else if n % 3 == 0 {
-        return "Fizz";
-    } else {
-        return n;
-    }
-}
+[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[=f
\ No newline at end of file