diff --git a/build.gradle b/build.gradle
index 7e1e6b736d..d91fc1fc81 100644
--- a/build.gradle
+++ b/build.gradle
@@ -44,7 +44,7 @@ test {
 }
 
 application {
-    mainClassName = "duke.Duke"
+    mainClassName = "gui.Launcher"
 }
 
 shadowJar {
diff --git a/docs/Ui.png.png b/docs/Ui.png
similarity index 100%
rename from docs/Ui.png.png
rename to docs/Ui.png