diff --git a/nac3core/src/lib.rs b/nac3core/src/lib.rs
index 80a0a65357..e122233b7f 100644
--- a/nac3core/src/lib.rs
+++ b/nac3core/src/lib.rs
@@ -559,7 +559,7 @@ impl<'ctx> CodeGen<'ctx> {
         self.module.print_to_stderr();
     }
 
-    pub fn output(&self) {
+    pub fn output(&self, filename: &str) {
         //let triple = TargetTriple::create("riscv32-none-linux-gnu");
         let triple = TargetMachine::get_default_triple();
         let target = Target::from_triple(&triple)
@@ -577,7 +577,7 @@ impl<'ctx> CodeGen<'ctx> {
             .expect("couldn't create target machine");
 
         target_machine
-            .write_to_file(&self.module, FileType::Object, Path::new("test.o"))
+            .write_to_file(&self.module, FileType::Object, Path::new(filename))
             .expect("couldn't write module to file");
     }
 }
diff --git a/nac3standalone/demo.c b/nac3standalone/demo.c
index 1aa111a441..beefe0b3ee 100644
--- a/nac3standalone/demo.c
+++ b/nac3standalone/demo.c
@@ -1,4 +1,4 @@
-// clang -Wall -o demo demo.c test.o
+// clang -Wall -o demo demo.c mandelbrot.o
 
 #include <stdio.h>
 #include <string.h>
diff --git a/nac3standalone/test.py b/nac3standalone/mandelbrot.py
similarity index 100%
rename from nac3standalone/test.py
rename to nac3standalone/mandelbrot.py
diff --git a/nac3standalone/src/main.rs b/nac3standalone/src/main.rs
index bd24df383a..f42a4f324f 100644
--- a/nac3standalone/src/main.rs
+++ b/nac3standalone/src/main.rs
@@ -10,7 +10,7 @@ use nac3core::CodeGen;
 fn main() {
     Target::initialize_all(&InitializationConfig::default());
 
-    let program = match fs::read_to_string("test.py") {
+    let program = match fs::read_to_string("mandelbrot.py") {
         Ok(program) => program,
         Err(err) => { println!("Cannot open input file: {}", err); return; }
     };
@@ -26,5 +26,5 @@ fn main() {
         Err(err) => { println!("Compilation error: {}", err); return; }
     }
     codegen.print_ir();
-    codegen.output();
+    codegen.output("mandelbrot.o");
 }