diff --git a/CHANGELOG b/CHANGELOG
index efc436661..af135f362 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -18,6 +18,7 @@ This project _loosely_ adheres to [Semantic Versioning](https://semver.org/spec/
 
 ### Fixed
  - Expression -> get would fail when executed on a Literal expression. [PR#353](https://github.com/perspect3vism/ad4m/pull/353)
+ - Fixed launcher breaking on windows if a new app instance is created. [PR#362](https://github.com/perspect3vism/ad4m/pull/362)
 ## [0.3.4] - 27/03/2023
 
 ### Added
diff --git a/ui/src-tauri/src/main.rs b/ui/src-tauri/src/main.rs
index 9716131ce..ce0b9a3ab 100644
--- a/ui/src-tauri/src/main.rs
+++ b/ui/src-tauri/src/main.rs
@@ -63,7 +63,8 @@ pub struct AppState {
 }
 
 fn main() {
-    if has_processes_running("AD4M") > 1 {
+    let app_name = if std::env::consts::OS == "windows" { "AD4M.exe" } else { "AD4M" };
+    if has_processes_running(app_name) > 1 {
         println!("AD4M is already running");
         return;
     }